Q: What type of does Application Load Balancer support?

A: Following three of are.

HTTP to HTTP
http://hostA to http://hostB
HTTP to HTTPS
http://hostA to https://hostB
https://hostA:portA/pathA to https://hostB:portB/pathB
HTTPS to HTTPS
https://hostA to https://hostB

Q: What content does ALB support for message body of fixed-response action?

A: Following content are: text/plain, text/css, text/html, application/javascript, application/json.

Q: How does AWS Lambda via Application Load Balancer work?


A: HTTP(S) by load balancer are by content-based. If request content rule—with an action forward it target group through Lambda function as target—then Lambda function. Content of request (body) Lambda function JavaScript object notation (JSON) format. Response from Lambda function should be JSON format. Response from Lambda function into HTTP response and sent client. Load balancer your Lambda function AWS Lambda Invoke API, and that you provide invoke for your Lambda function Elastic Load Balancing service.

Q: Does Lambda via Application Load Balancer support over both HTTP and HTTPS protocol?

A: Yes. Application Load Balancer Lambda for over both HTTP and HTTPS protocol.

Q: In which AWS can I use Lambda as with Application Load Balancer?

A: You can use Lambda target with Application Load Balancer US East (N. Virginia), US East (Ohio), US West (Northern California), US West (Oregon), Asia Pacific (Mumbai), Asia Pacific (Seoul), Asia Pacific (Singapore), Asia Pacific (Sydney), Asia Pacific (Tokyo), Canada ( Central), EU (Frankfurt), EU (Ireland), EU (London), EU (Paris), South America (São Paulo), and GovCloud (US-West) AWS Regions.

Q: Application Load Balancer available AWS Local Zones?

A: Yes, Application Load Balancer available Local Zone Los Angeles. Within Los Angeles Local Zone, Application Load Balancer will operate single subnet and scale automatically meet of application load without manual.

Application Load Balancer Pricing FAQs

Q: How does Application Load Balancer work?

A: You are for each hour or partial hour that Application Load Balancer and number of Load Balancer Capacity Units (LCU) used per hour.

Q: What Load Balancer Capacity Unit (LCU)?

A: LCU new metric for how you pay for Application Load Balancer. LCU maximum resource any one of (new, active, bandwidth and rule) Application Load Balancer processes your traffic.

Q: Will I be billed Classic Load Balancers by LCU?

A: No, Classic Load Balancers will continue be for bandwidth and hourly usage.

Q: How do I know number of LCUs Application Load Balancer?

A: We expose usage of all four that constitute LCU via Amazon CloudWatch.

Q: Will I be all LCU?

A: No. Number of LCUs per hour will be maximum resource amongst four that LCU.

Q: Will I be partial LCUs?

A: Yes.

Application Load Balancer continue…

Q: Free tier Application Load Balancer for new AWS?

A: Yes. For new AWS, free tier for Application Load Balancer 750 and 15 LCUs. Free tier offer only available new AWS, and available for 12 your AWS sign-up date.

Q: Can I use of Application Load Balancer and Classic Load Balancer as part of my free tier?

A: Yes. You can use both Classic and Application Load Balancers for 15 GB and 15 LCUs respectively. The 750 load balancer are between both Classic and Application Load Balancers.

Q: What are rule?

A: Rule are defined as product of number of and request rate over hour.

Q: How does LCU work with different certificate and key?

A: Certificate key size only number of new per second LCU for. Table value of for different key for RSA and ECDSA.

 
RSA
 

Key Size
<=2K  <=4K <=8K >8K 
New connections/sec
25       5    1  0.25

ECDSA
  
Key Size 
<=256  <=384  <=521  >521 
New connections/sec
25    5    1   0.25

Q: Am for regional AWS data transfer when cross-zone load balancing Application Load Balancer?


A: No. Since cross-zone load balancing always with Application Load Balancer, you are not for type of regional data transfer.

Q: User Application Load Balancer separately?

A: No.There no separate charge for functionality Application Load Balancer. When Amazon Cognito with Application Load Balancer, Amazon Cognito will apply.

Q: How do you charge for Application Load Balancer usage with AWS Lambda?

A: You are as usual for each hour or partial hour that Application Load Balancer and number of Load Balancer Capacity Units (LCU) used per hour. For Lambda, each LCU 0.4 GB per hour, 25 new per second, 3,000 active per minute, and 1,000 rule per second. For dimension, each LCU 0.4 GB per hour for Lambda versus 1 GB per hour for all other target like Amazon EC2, and IP addresses. Please note that usual AWS Lambda apply Lambda by Application Load Balancer.

Q: How can I differentiate by Lambda versus by other (Amazon EC2, and servers)?

A: Applications Load Balancers emit two new CloudWatch. LambdaTargetProcessedBytes metric by Lambda, and StandardProcessedBytes metric by all other target.

Network Load Balancer

Q: Can I create TCP or UDP (Layer 4) listener for my Network Load Balancer?

A: Yes. Network Load Balancers support both TCP, UDP, and TCP+UDP (Layer 4), as well as TLS.

Network Load Balancer continue…

Q: What are key available with Network Load Balancer?

A: Network Load Balancer both TCP and UDP (Layer 4) load balancing. It handle of per second and sudden volatile traffic, and extremely low. In, Network Load Balancer also TLS, source IP of, and stable IP support and zonal. It also long that are useful for WebSocket type.

Q: Can Network Load Balancer process both TCP and UDP protocol traffic same port?

A: Yes. Achieve, you can TCP+UDP listener. For example, for DNS service both TCP and UDP, you can create TCP+UDP listener port 53, and load balancer will process traffic for both UDP and TCP that port. You must associate TCP+UDP listener with TCP+UDP target group.


Q: How does Network Load Balancer compare what I get with TCP listener Classic Load Balancer?

A: Network Load Balancer source IP of client, which not preserved Classic Load Balancer. Can use proxy protocol with Classic Load Balancer get source IP. Network Load Balancer automatically static IP per Availability Zone (AZ) load balancer and also Elastic IP load balancer per AZ. Not with Classic Load Balancer.

Q: Can I migrate Network Load Balancer from Classic Load Balancer?

A: Yes. You can migrate Network Load Balancer from Classic Load Balancer one of document.

Q: Are there for my Network Load Balancer?

A: Yes, please refer Network Load Balancer for more.

Q: Can I use AWS Management Console set up my Network Load Balancer?

A: Yes, you can use AWS Management Console, AWS CLI, or API set up Network Load Balancer.

Q: Can I use API for Classic Load Balancers for my Network Load Balancers?

A: No. Create Classic Load Balancer, use 2012-06-01 API. Create Network Load Balancer or Application Load Balancer, use 2015-12-01 API.

Q: Can I create my Network Load Balancer single Availability Zone?

A: Yes, you can create your Network Load Balancer single AZ by single subnet when you create load balancer.

Q: Does Network Load Balancer support DNS regional and zonal fail-over?

A: Yes, you can use Amazon Route 53 health and DNS failover enhance availability of behind Network Load Balancers. Route 53 DNS failover, you can run multiple AWS Availability and designate alternate load balancers for failover across. 

Event that you have your Network Load Balancer for multi-AZ, if there are no healthy Amazon EC2 with load balancer for that AZ, or if load balancer given zone are unhealthy, then Route 53 will fail away alternate load balancer other healthy AZs.

Q: Can I have Network Load Balancer with mix of ELB IPs and Elastic IPs or private IPs?

A: No. Network Load Balancer’s addresses must be completely by you, or completely by ELB. Ensure that when Elastic IPs with Network Load Balancer, all known your do not change.

Q: Can I assign more than one EIP my Network Load Balancer each subnet?

A: No. For each subnet Network Load Balancer, Network Load Balancer can only support single public/internet IP address.

Q: If I remove/delete Network Load Balancer what will happen Elastic IP addresses that were with it?

A: Elastic IP Addresses that were with your load balancer will return your pool and be available for future use.

Q: Does Network Load Balancer support internal load balancers?

A: Network Load Balancer can be set up as internet load balancer or internal load balancer, similar what possible with Application Load Balancer and Classic Load Balancer.

Q: Can internal Network Load balancer support more than one private IP in each subnet?

A: No. For each subnet that load balancer, Network Load Balancer can only support single private IP.

Q: Can I set up Websockets with my Network Load Balancer?

A: Yes, configure TCP that route the traffic that implement WebSockets protocol (https://tools.ietf.org/html/rfc6455 ).Because WebSockets layer 7 protocol and Network Load Balancer at layer 4, no special Network Load Balancer for WebSockets or other higher level.

Network Load Balancer continue…

Q: Can I load balance to any arbitrary IP address?

A: Yes. You can use any IP address from the load balancer’s VPC CIDR for targets within load balancer’s VPC and any IP address from RFC 1918 ranges (10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16) or RFC 6598 range (100.64.0.0/10) for targets located outside the load balancer’s VPC (EC2-Classic and on-premises locations reachable over AWS Direct Connect). Load balancing to IP address target type is supported for TCP listeners only, and is currently not supported for UDP listeners.

Q: Can I use Network Load Balancer to setup AWS PrivateLink?

A: Yes, Network Load Balancers with TCP and TLS can be setup AWS PrivateLink. You cannot set up PrivateLink with UDP Network Load Balancers.

Q: What UDP flow?

A: While user datagram protocol (UDP) connectionless, load balancer UDP flow state based 5-tuple hash, that sent same context are consistently same target. Flow considered active as long as traffic and until idle timeout reached. Once timeout threshold, load balancer will forget affinity, and UDP packet will be new flow and load-balanced new target.

Q: What idle timeout by Network Load Balancer?

A: Network Load Balancer idle timeout for TCP 350. Idle timeout for UDP flows 120.

Q: What benefit of behind load balancer with IP addresses instead of instance IDs?

A: Each container instance can now have own security group, and does not need share security with other. You can attach security ENI, and each ENI instance can have different security group. You can map container IP address of particular ENI associate security group(s) per container. Load balancing using IP addresses also multiple instance use same port (say port 80). Ability use same port across instance communicate with each other through well-known instead of random.

Q: How can I load balance across a VPC and location?

A: There are achieve hybrid load balancing. If between VPC and location, you can add them same target group their IP addresses. Migrate AWS without your application, gradually add VPC target group and remove targets from target group. You can also use separate load for VPC and targets and use DNS achieve load balancing between VPC and targets.

Q: How can I load balance EC2-Classic?

A: You cannot load balance EC2-Classic when their Instance IDs as. However if you link these EC2-Classic load balancer's VPC using ClassicLink and use private IPs of these EC2-Classic as, then you can load balance EC2-Classic. If you are using EC2 Classic today with Classic Load Balancer, you can easily migrate Network Load Balancer.

Q: How do I enable cross-zone load balancing Network Load Balancer?

A: You can enable cross-zone loading balancing only after your Network Load Balancer. You achieve by load balancing section and then cross-zone load balancing support checkbox.

Q: Am I for regional AWS data-transfer when I enable cross-zone load balancing Network Load Balancer?

A: Yes, you will be for regional data transfer between Availability with Network Load Balancer when cross-zone load balancing is enabled. Check data transfer section of Amazon EC2 On-Demand page.

Q: There any impact of cross-zone load balancing Network Load Balancer?

A: Yes. Network Load Balancer currently 200 per Availability Zone. For example, if you are two AZs, you can have up 400 with Network Load Balancer. If cross-zone load, then maximum reduce from 200 per AZ to 200 per load balancer. So, example above: When cross-zone load balancing, even though your load balancer two AZs, you are 200 that can be load balancer.

Network Load Balancer continue…

Q: Source IP when TLS Network Load Balancer?

A: Source IP be even if you terminate TLS Network Load Balancer.

Q: What are get SSL certificate?

A: You can either use AWS Certificate Manager provision SSL/TLS certificate, or you can obtain certificate from other by certificate request, certificate request by certificate authority (CA), and then certificate either using AWS Certification Manager (ACM) or AWS Identity and Access Management (IAM) service.

Q: How can enable Server Name Indication (SNI) for my Network Load Balancer?

A: SNI automatically when you associate more than one TLS certificate with same secure listener load balancer. Similarly, SNI mode for secure listener automatically when you have only one certificate secure listener.

Q: How does Network Load Balancer integrate with AWS Certificate Manager (ACM) or Identity Access Manager (IAM)?

A: Network Load Balancer with AWS Certificate Management (ACM). Integration with ACM it very simple bind certificate load balancer thereby entire SSL offload process very easy. SSL/TLS time manual and complex process. With ACM integration with Network Load Balancer, whole process has been simply SSL/TLS certificate and ACM certificate provision it with load balancer. Once you create Network Load balancer, you can now configure TLS listener by option select certificate from either ACM or Identity Access Manager (IAM). Experience similar what you have Application Load Balancer or Classic Load Balancer.

Q: Back-end server with Network Load Balancer?

A: No, only back-ends with Network Load Balancer.

Q: What are certificate types by Network Load Balancer?

A: Network Load Balancer only RSA with 2K key size. We currently do not support RSA certificate key greater than 2K or ECDSA Network Load Balancer.

Q: Which AWS Regions TLS Termination Network Load Balancer?

A: You can use TLS Termination Network Load Balancer US East (N. Virginia), US East (Ohio), US West (Northern California), US West (Oregon), Asia Pacific (Mumbai), Asia Pacific (Seoul), Asia Pacific (Singapore), Asia Pacific (Sydney), Asia Pacific (Tokyo), Canada (Central), EU (Frankfurt), EU (Ireland), EU (London), EU (Paris), South America (São Paulo), and GovCloud (US-West) AWS Regions.
Network Load Balancer Pricing FAQs
Q: How does Network Load Balancer pricing work?

A: You are charged for each hour or partial hour that Network Load Balancer and number of Load Balancer Capacity Units (LCU) used by Network Load Balancer per hour.

Q: What Load Balancer Capacity Unit (LCU)?

A: LCU new metric for how you pay for Network Load Balancer. LCU maximum resource any one of (new, active, and bandwidth) Network Load Balancer processes your traffic.

Q: What are LCU for TCP traffic Network Load Balancer?

A: LCU metrics for TCP traffic are:

800 new TCP per second.
100,000 active TCP (sampled per minute).
1 GB per hour for Amazon EC2 and IP addresses.
 
Q: What are LCU metrics for UDP traffic Network Load Balancer?
A: LCU metrics for UDP traffic are:

400 new per second.
50,000 active UDP (per minute).
1 GB per hour for Amazon EC2 and IP addresses.

Q: What are LCU metrics for TLS traffic Network Load Balancer?

A: LCU metrics for TLS traffic are:

50 new TLS per second.
3,000 active TLS (per minute).
1 GB per hour for Amazon EC2 and IP addresses.

Network Load Balancer continue…

Q: Will I be billed all (Processed, New and Active)?
 
A: No, for each protocol you only one of three dimensions (highest for hour).

Q: New per sec same as /sec?

A: No. Multiple can be sent single.

Q: Will I be billed Classic Load Balancers by LCU?

A: Classic Load Balancers will continue billed for bandwidth and hourly charge.

Q: How do I know number of LCUs Network Load Balancer using?

A: We will expose usage of all three that LCU via Amazon CloudWatch.

Q: Will I be billed all  dimensions LCU?

A: No. Number of LCUs per hour will be maximum resource amongst three that LCU.

Q: Will I be billed partial LCUs?

A: Yes.

Q: Free tier Network Load Balancer for new AWS?

A: Yes. For new AWS, free tier for Network Load Balancer 750 and 15 LCUs. Free tier offer only available new AWS, and available for 12 your AWS sign-up date.

Q: Can I use of Network Load Balancer, Application Load Balancer and Classic Load Balancer part of my free tier?

A: Yes. You can use Application and Network each for 15 LCUs and Classic for 15 GB respectively. 750 load balancer are between Application, Network, and Classic Load Balancers.
Gateway Load Balancer
Getting started
Q: When should I use Gateway Load Balancer, Network Load Balancer or Application Load Balancer?

A: You should use Gateway Load Balancer when inline virtual where network traffic not for Gateway Load Balancer itself. Gateway Load Balancer transparently all Layer 3 traffic through third-party virtual, and invisible source and destination of traffic. For more how these load balancers compare, see comparison page.

Q: Where Gateway Load Balancer available?

A: Gateway Load Balancer available: AWS GovCloud (US-East), AWS GovCloud (US-West), US East (N. Virginia) - except in zone us1-az3, US East (Ohio), US West (Oregon), US West (N. California), Canada (Central), South America (Sao Paulo), EU (Ireland), EU (Frankfurt), EU (Stockholm), EU (London), EU (Paris), EU (Milan), Africa (Cape Town), Middle East (Bahrain), Asia Pacific (Sydney), Asia Pacific (Tokyo), Asia Pacific (Hong Kong), Asia Pacific (Singapore), Asia Pacific (Mumbai), Asia Pacific (Seoul), Asia Pacific (Osaka), China (Beijing), China (Ningxia).

Q: Gateway Load Balancer per Region or per Availability Zone (AZ)?

A: Gateway Load Balancer within one AZ.

Q: What are key available with Gateway Load Balancer?

A: Gateway Load Balancer both Layer 3 gateway and Layer 4 load balancing. It transparent bump wire device that does not change any part of packet. It handle of /second, volatile traffic, and extremely low latency. See Gateway Load Balancer table. 

Q: Does Gateway Load Balancer perform TLS termination?

A: Gateway Load Balancer does not perform TLS termination and does not maintain any application state. These are performed by third-party virtual it traffic, and traffic from.

Gateway Load Balancer continue…

Q: Does Gateway Load Balancer maintain application state?

A: Gateway Load Balancer does not maintain application state, but it flow specific appliance using 5-tuple (for TCP/UDP) or 3-tuple (for non-TCP/UDP).

Q: How does Gateway Load Balancer define flow?

A: By default, Gateway Load Balancer flow combination of 5-tuple that of Source IP, Destination IP, Protocol, Source Port, and Destination Port. Using default 5-tuple hash, Gateway Load Balancer sure that both of flow (i.e., source to destination, and destination to source) are consistently same target. Flow active long traffic and until idle timeout. Once timeout threshold, load balancer will forget affinity, and traffic packet will be new flow and may be load-balanced new target.

Note that default 5-tuple hash can affect TCP based that use separate or port for control and data, such FTP, Microsoft RDP, Windows RPC and SSL VPN. Control and data of such can land different target and can cause traffic. If you want support such, you can enable GWLB flow using 3-tuple (source IP, destination IP, transport protocol) or 2-tuple (source IP, destination IP). Please see flow for how change flow type.

Q: What idle timeout by Gateway Load Balancer?

A: Gateway Load Balancer idle timeout for TCP 350. Idle timeout for non-TCP120. These are fixed and cannot be.

Q: Can fragment?

A: No. Target of Gateway Load Balancer (GWLB) should not fragment they have when them back GWLB. By appliance are at Gateway Load Balancer because layer 4 header not present IP. Prevent from appliance, we recommend jumbo frame your appliance or your appliance’s network interface use maximum MTU, thus transparent behavior by original packet.

Q: How does Gateway Load Balancer handle failure of one virtual appliance instance single Availability Zone?

A: When single virtual appliance instance, Gateway Load Balancer it from list and traffic healthy appliance instance.

Q: How does Gateway Load Balancer handle failure of all virtual within single AZ?

A: If all virtual within Availability Zone fail, Gateway Load Balancer will drop network traffic. We recommend Gateway Load Balancers multiple AZs for greater availability. If all fail one AZ, can be used either add new, or direct traffic Gateway Load Balancer different AZ.

Q: Can I configure appliance be target for more than one Gateway Load Balancer?

A: Yes, multiple Gateway Load Balancers can point to same set of virtual.

Q: What type of listener can I create for my Gateway Load Balancer?

A: Gateway Load Balancer transparent bump wire device and all of IP traffic (TCP, UDP, ICMP, GRE, ESP). Hence only IP listener created Gateway Load Balancer.

Q: Are there resources for my Gateway Load Balancer?

A: Yes, please refer Gateway Load Balancer for more.

Q: Can I use AWS Management Console set up my Gateway Load Balancer?

A: Yes, you can use AWS Management Console, AWS CLI, or API set up Gateway Load Balancer.

Q: Can I create my Gateway Load Balancer in single Availability Zone?

A: Yes, you can create your Gateway Load Balancer single availability zone by single subnet when you create load balancer. However, we recommend using multiple availability for availability. You cannot add or remove availability for Gateway Load Balancer after you create it.

Q: How do I enable cross-zone load balancing Gateway Load Balancer?

A: By default, cross-zone load balancing. You can enable cross-zone loading balancing only after your Gateway Load Balancer. You achieve by load balancing section and then by cross-zone load balancing support checkbox.

Gateway Load Balancer continue…

Q: Am I charged for AWS data-transfer when I enable cross-zone load balancing in Gateway Load Balancer?

A: Yes, you will be charged for data transfer between Availability with Gateway Load Balancer when cross-zone load balancing enabled. Check in data-transfer section at Amazon EC2 Demand page.

Q: There any impact of cross-zone load balancing Gateway Load Balancer?

A: Yes. Gateway Load Balancer currently 300 per Availability Zone. For example, if you Gateway Load Balancer in 3 Availability-Zones, you can have up 900. If cross-zone load balancing, then maximum number of from 300 per Availability Zone 300 per Gateway Load Balancer.

Gateway Load Balancer Pricing FAQs
Q: How does Gateway Load Balancer work?

A: You are charged for each hour or partial hour that  Gateway Load Balancer and number of Load Balancer Capacity Units (LCU) used by Gateway Load Balancer per hour.

Q: What Load Balancer Capacity Unit (LCU)?

A: LCU Elastic Load Balancing metric for how you pay for Gateway Load Balancer. LCU maximum resource any one of (new, active, and bandwidth) Gateway Load Balancer your traffic.

Q: What LCU metrics for Gateway Load Balancer?

A: LCU metrics for TCP traffic:

600 new (or) per second.
60,000 active (or) (per minute).

1 GB per hour for EC2 instances and IP addresses.
 
Q: Will I be billed all (New and Active)?

A: No, you are charged only on one of three(highest for the hour).

Q: New (or) per second same as /sec?
 
A: No. Multiple can be sent single connection.
 
Q: How do I know number of LCUs a Gateway Load Balancer using?
 
A: You can track usage of all three of LCU via Amazon CloudWatch.
 
Q: Will I be billed partial LCUs?
 
A: Yes.

Gateway Load Balancer Endpoints
Q: Why do I need Gateway Load Balancer Endpoint?

Order be valuable, virtual need introduce as little additional latency as possible, and traffic and from virtual appliance must follow secure connection. Gateway Load Balancer Endpoints create secured, low-latency necessary meet these.

Q: How do Gateway Load Balancer help with centralization?

Using Gateway Load Balancer Endpoint, can reside different AWS and VPCs. Be one location for easier management and operational overhead.

Q: How do Gateway Load Balancer Endpoints work?

Gateway Load Balancer Endpoints are new type of VPC endpoint that PrivateLink technology. As network traffic from source (Internet Gateway, VPC, etc.) Gateway Load Balancer, and back, Gateway Load Balancer Endpoint private connectivity between two. All traffic over AWS network and data never internet, both security and performance.

Q: How are PrivateLink Interface different than Gateway Load Balancer?

PrivateLink Interface endpoint with Network Load Balancer (NLB) order distribute TCP and UDP traffic that for web applications. Contrast, Gateway Load Balancer Endpoints are used with Gateway Load Balancers connect source and destination of traffic. Traffic from Gateway Load Balancer Endpoint Gateway Load Balancer, through virtual, and back destination over secured PrivateLink.

Gateway Load Balancer Pricing FAQs continue…

Q: How many Gateway Load Balancer can I connect one Gateway Load Balancer?

Gateway Load Balancer Endpoint VPC Endpoint and there no limit how many VPC can connect service that uses Gateway Load Balancer. However, we recommend no more than 50 Gateway Load Balancer per one Gateway Load Balancer reduce risk of broader impact in case of service failure.

Classic Load Balancer
Q: Which operating systems does Classic Load Balancer support?

A: Classic Load Balancer Amazon EC2 instances with any operating system currently by Amazon EC2 service.

Q: Which does Classic Load Balancer support?

A: Classic Load Balancer load balancing of using HTTP, HTTPS (Secure HTTP), SSL (Secure TCP) and TCP.

Q: What TCP can I load balance?

A: You can perform load for following TCP:

[EC2-VPC] 1-65535
[EC2-Classic] 25, 80, 443, 465, 587, 1024-65535
Q: Does Classic Load Balancer support IPv6 traffic?

A: Yes. Each Classic Load Balancer has IPv4, IPv6, and dualstack (both IPv4 and IPv6) DNS name. IPv6 not supported VPC. You can use Application Load Balancer for native IPv6 support VPC.

Q: Can I configure my Amazon EC2 instances only accept traffic from Classic Load Balancers?

A: Yes.

Q: Can I configure security group for front-end of Classic Load Balancers?

A: If you are using Amazon Virtual Private Cloud, you can configure security for front end of your Classic Load Balancers.

Q: Can I use a single Classic Load Balancer for HTTP and HTTPS?

A: Yes, you can map HTTP port 80 and HTTPS port 443 single Classic Load Balancer.

Q: How many will my load balanced Amazon EC2 instances need accept from each Classic Load Balancer?

A: Classic Load Balancers do not cap number of that they can attempt establish with your load balanced Amazon EC2 instances. You can expect number scale with number of concurrent HTTP, HTTPS, or SSL or number of concurrent TCP that Classic load balancers receive.

Q: Can I load balance Amazon EC2 instances using Paid AMI?

A: You can load balance Amazon EC2 instances using paid AMI from AWS Marketplace. However, Classic Load Balancers do not support using paid AMI from Amazon DevPay site.

Q: Can I use Classic Load Balancers Amazon Virtual Private Cloud?

A: Yes. See Elastic Load Balancing web page.

Q: Can I get history of Classic Load Balancer API calls made my account for security analysis and operational?

A: Yes. Receive history of Classic Load Balancer API calls made your account, simply turn CloudTrail AWS Management Console.

Q: Do Classic Load Balancers support SSL ?

A: Yes, you can terminate SSL on Classic Load Balancers. You must install SSL certificate each load balancer. Load balancers use certificate terminate connection and then decrypt from before them back-end instances.

Classic Load Balancer continue…

Q: What are get SSL certificate?

A: You can either use AWS Certificate Manager provision SSL/TLS certificate or you can obtain certificate from other by certificate request, certificate request by CA, and then certificate using AWS Identity and Access Management (IAM) service.

Q: How do Classic Load Balancers integrate with AWS Certificate Manager (ACM)?

A: Classic Load Balancers are now with AWS Certificate Management (ACM). Integration with ACM it very simple bind certificate each load balancer thereby making entire SSL offload process very easy. Typically SSL/TLS time manual and complex process. With ACM with Classic Load Balancers, whole process has been simply SSL/TLS certificate and ACM certificate provision it with each load balancer.

Q: How do I enable cross-zone load balancing Classic Load Balancer?

A: You can enable cross-zone load balancing using console, AWS CLI, or AWS SDK. See Cross-Zone Load Balancing for more.

Q: Am I for regional AWS data-transfer when I enable cross-zone load balancing Classic Load Balancer?

A: No, you are not for regional data transfer between Availability Zones when you enable cross-zone load balancing for your Classic Load Balancer.

Amazon Route 53 FAQs

Getting Started

Q: What is a Domain Name System (DNS) Service?

DNS globally service that human readable like www.example.com into numeric IP like 192.0.2.1 that use connect each other. The Internet's DNS system much like phone book by the between and. For DNS, the are domain (www.example.com) that are easy for people to remember and are IP addresses (192.0.2.1) that specify location of Internet. DNS translate for into IP which server end user will reach when they type domain name into their web browser. These are called.

Q: What is Amazon Route 53?

Amazon Route 53 highly available and scalable Domain Name System (DNS), domain name and health web. It give and extremely reliable and cost effective way route end Internet by like example.com into numeric IP such as 192.0.2.1, that use connect each other. You can combine your DNS with health route traffic healthy or independently monitor and /or alarm. You can also purchase and manage domain such as example.com and automatically configure DNS for your Route 53 effectively user infrastructure in AWS - such as Amazon EC2 Elastic Load Balancing load or Amazon 53 - and can also be used route infrastructure outside of AWS.

Q: What can I do with Amazon Route 53?

With Amazon Route 53, you can create and manage your public DNS.  Like phone book, Route 53 lets you manage IP for your domain in DNS phone book. Route 53 also to translate specific domain like into their IP like 192.0.2.1.  You can use Route 53 to create DNs for new domain or transfer DNs for existing domain. the simple based REST API for Route 53 you to easily create, update and manage DNS Route 53 additionally health to monitor health and performance of your application as well as your web and other. You can also register new domain or transfer domain to be by Route 53.

Q: How do I get started with Amazon Route 53?

Amazon Route 53 has simple web service interface that you get in. You DNs are into that you configure with AWS Management Console or Route 53's API. To use Route 53, you simply.

Subscribe service by sign-up button service page.

If you already have a domain name:

Use AWS Management Console CreateHostedZone API create zone that can store DNS for your domain. Upon the zone, you receive four Route 53 name across four different Top-Level Domains (TLDS) help ensure high level of availability.

Additionally, you can transfer your domain name Route 53 management via either the AWS Management Console or API.

If you don't already have a domain name:

Use AWS Management Console or API register your new domain name.

Route 53 automatically a zone that DNS for your domain. you also receive four Route 53 name across four different Top-Level (TLDs) help ensure high level of availability.

Your hosted zone will be initially with a basic set of DNS four virtual name that will answer for your domain. You can add, delete or change in set by using AWS Management Console or by ChangeResourceRecordSet API. A list of DNS is available here.

If your domain name not by Route 53. You will need inform registrar with whom you your domain name update name for your domain with your zone. If your domain name by Route 53 already, your domain name will be automatically with name your zone.

Amazon Route 53 FAQS

Getting Started continue…

Q: What are DNS server for Amazon Route 53 service?

Provide you with highly available service, each Amazon Route 53 zone by own set of virtual DNS. DNS server for each zone are thus by system when that zone.

Q: What difference between Domain and Zone?

Domain general DNS concept. Domain are easily recognizable for numerically Internet.  For example, amazon.com domain.  Zone Amazon Route 53 concept. Zone traditional DNS zone file, it of that can be together, single parent domain name. All resource record within zone must have domain name as. For example, amazon.com zone may contain www.amazon.com, and www.aws.amazon.com, but not record www.amazon.ca. You can also use route 53 Management Console or API create, Inspect, modify and delete. You can also use Management Console or API register now domain and transfer domain into Route 53's management.

Q: What price of Amazon Route 53?

Amazon Route 53 are on actual usage of service for Health and Domain. For full see Amazon Route 53 page. You pay only for what you use. There are no minimum, no minimum usage and no overage. You can estimate your monthly bill using AWS Calculator.

Q: What of access can I set for management of my Amazon route 53?

You can control management access your Amazon Route 53 zone and individual resource record using AWS Identity and Access Management (IAM) service. AWS IAM you to control who in your organization can make yuour DNS by multiple and managing for each of these within your AWS Account. Learn more about AWS IAM here.

Q: I have  for Amazon Route 53 but when I try use service it says "AWS Access Key ID for service."?

When you sign up for new AWS service, it can take up 24 in some complete time you cannot sign up for service again. If you've been longer than 24 without email, this could indicate problem with your account or of your payment. please contact AWS Customer Service for help.

Q: When my zone charged?

Once when they are created and then first day of each month.

Q: Why do I see two for same zone in same month?

Zones, have period of 12 - if you delete zone within 12 after you create it, we don't charge your for zone. After grace period , we immediately charge standard monthly fee for zone. If you create zone last day of month. (for example, January 31 st) charge for January might appear February invoice, along with charge for February.

Q: Does Amazon Route 53 provide query capability?

You can configure Amazon Route 53 log information about that Amazon Route 53 including date-time stamp, domain name, query type, location etc. When you configure query, Amazon Route 53 send CloudWatch access query. for more please see our documentation.

Q: Does Amazon Route 53 offer Service Level Agreement (SLA)?

Yes, Both Amazon Route 53 authoritative service and Amazon Route 53 Resolver service provide for service credit if monthly uptime percentage below our service commitment in any cycle. More can be found at Amazon Route 53 service Level Agreement and Amazon Route 53 Resolver Service Level Agreement.

Domain Name Systems (DNS)

Q: Does Amazon Route 53 use an anycast network?

Yes, Anycast and technology that your end users DNS get from optimal Route 53 location given network.  As result, your get highly availability and performance with Route 53.

Q: Is there a limit to the number of hosted zones I can manage using Amazon Route 53?

Each Amazon Route 53 maximum of 500 and 10,000 resource record per zone. Complete our request for higher limit and we will respond your request within two business.

Q: how can I Import a zone into Route 53?

Route 53 standard DNS zone can be from many DNS as well  as standard DNS server software such as BIND. For newly, as well as that are empty except for default NS and SOA, you can paste your zone file directly into Route 53 console, and Route 53 automatically in your zone. To get with zone file import, read our walkthrough in Amazon Route 53 Developer Guide.

Q: Can I create multiple for same domain name?

Yes, multiple you verify DNS in "test" environment, and then replicate those zone. For example, zone Z1234 might be your test version of example.com, on name ns-1, ns-2, ns-3 and ns-4. Similarly, zone Z5678 might be your production version of example.com, ns-5, ns-6, ns-7 and ns-8. since each zone has virtual set of name with that zone, Route 53 will answer DNS for example.com differently which name server you send DNS query to.

Q: does Amazon route 53 also provide website hosting?

No. Amazon Route 53 is authoritative DNs service and does not provide website hosting, However, you can use Amazon Simple Storage Service (Amazon S3).  Host website. Host dynamic website or other web, you can use Amazon Elastic Compute Cloud (Amazon EC2), flexibility, control, and significant cost over traditional web. Learn more about Amazon EC2 here. For both static and dynamic, you can provide low latency delivery your global end with Amazon Cloud Front. Learn more about Amazon CloudFront here.

Q; Which DNS record types does Amazon Route 53 support?

Amazon Route 53 currently DNS record

A(address record)

AAAA( IPV6 address record)

CNAME (canonical name record)

CAA (certification authority authorization)

MX (mail exchange record)

NAPTR (name authority pointer record)

NS (name server record)

PTR (pointer record)

SOA (start of authority record)

SPF (sender policy framework)

SRV (service locator)

TXT (text record)

Amazon route 53 also alias, which are Amazon Route 53 -specific extension to DNS. You can create alias route traffic AWS Amazon Elastic Load Balancing load balancers, Amazon CloudFront Distributions, AWS Elastic Beanstalk environments, API Gateways, VPC Interface endpoints, and Amazon s3 buckets that are. Alias record typically have type of A or AAA, but they work like CNAME record. Alias record, you can map your record name (example.com) DNS name for AWs resource (elb1234.elb.amazonaws.com). see A or AAA record and IP address of  AWS resource.

We anticipate additional record in future.

Q: Does Amazon Route 53 support wildcard entries? If so, what record types support them?

Yes, make it even easier for your configure DNs for your domain, Amazon Route 53 wildcard for all record except NS. A wildcard entry record DNS zone that will match for any domain name you set. for example, wildcard DNS record such as *.example.com will match for www.example.com and subdomain.example.com

Q: What is the default TTL for the various record types and can I change these values?

Time for which DNS resolver response set by value called time live (TTL) with every record.  Amazon Route 53 does not have default TTL for any record type. You must always specify TTL for each record so that DNS can cache your DNS to length of time through TTL.

Domain Name Systems (DNS) continue…

Q:  Are resource record transactional?

Yes, transactional change ensure that change consistent, reliable, and independent of other. Amazon Route 53 has been so that complete entirely any individual DNS server,  or not at all. Ensure your DNS are always consistently, important when such as between. When using API, each call ChangeResourceRecord Sets identifier that can be used track status of change. Once status as INSYNC, your change has been all of Route 53 DNS.

Q: Can I associate multiple IP addresses with single record?

Yes. multiple IP addresses with single record often used for load of geographically web. Amazon Route 53 you list multiple IP addresses for record and DNS with list of all IP address.

Q: How quickly will I make my DNS Amazon Route 53 propagate globally?

Amazon Route 53 propagate you make your DNS world-wide network of authentication DNS within 60 under normal. Change successfully world-wide when API call INSYNC status.

Note that DNS are outside control of Amazon Route 53 service and will cache your resource record their time live (TTL). INSYNC or PENDING status of change only state of Route 53 authoritative DNS.

Q: Can I use AWS CloudTrail roll back my?

No, We recommend that you do not use CloudTrail roll back your because of your zone change history your CloudTrail may be incomplete.

Your AWS CloudTrail can be used for of security, resource change and compliance.

Q: Does Amazon Route 53 support DNSSEC?

Yes, You can enable DNSSEC for and new public as well as DNSSEC for Amazon Route 53 Resolver. Additionally Amazon 53 DNSSEC domain.

Q: Can I point my zone apex (example.com versus www.example.com) at my Elastic load Balancer?

Yes, Amazon Route 53 special type of record called "Alias' record that you map your zone apex (exapmle.com) DNs name DNS name for your ELB load balancer (such as my-loadbalancer-1234567890.us.-west-2.elb.amazonaws.com). IP addresses with load balancers can change at any time due up, down or software. Route 53 each request for Alias record with one or more IP address for load balancer. Route 53 each request for three of load balancers: Application Load Balancers, Network Load Balancers, and Classic Load Balancers. There no additional charge for to Alias that are AWS ELB load Balancers. These are listed as "Intra-AWS-DNS-Queries" Amazon Route 53 usage report.

Q: Can I point my zone apex (example.com versus www.example.com) at my website Amazon 53?

Yes, Amazon Route 53 special type of record called and 'Alias' record that you map zone apex (example.com) DNS name your Amazon 53 website bucket (i.e example.com.s3-website-us-west-2-amazonaws.com). IP addresses with Amazon 53 website can change at any time due up, down, or software. Route 53 each request for Alias record with one IP address for bucket. Route 53 doesn't change for Alias that are S3 bucket that as website. These are as "Intra-AWS-DNS-Queries" Amazon Route 53 usage report.

Q: Can I use 'Alias' record with my sub-domains?

Yes, you can also use Alias record to map your sub-domains (www.example.com), pictures.example.com, etc.) to your ELB load balancers, CloudFront or S3 website.

Q: Can I point my zone apex (example.com versus www.example.com) at my Amazon CloudFront distribution ?

Yes. Amazon Route 53 special type of record called 'Alias' record that you map your zone apex (example.com) DNS name your Amazon CloudFront , for example, d123.cloudfront.net). IP addresses with Amazon CloudFront endpoints vary based your end user's location (order direct end user nearest CloudFront edge location) and can change at any time due up, down or software. Route 53 each request for Alias record with IP address(es) for the distribution. Route 53 doesn't charge for Alias that are CloudFront. These are as 'Intra-AWS-DNS-Queries" Amazon Route 53 usage report.

Q: Can I point my zone apex (example.com versus www.example.com) at my AWS Elastic Beanstalk environment?

Yes. Amazon Route 53 special type of record called 'Alias' record that you map your zone apex(example.com) DNS name your AWS Elastic beanstalk DNS name (i.e example.elasticbeanstalk.com). IP addresses with AWS Elastic Beanstalk can change at any time due up, down, or software. Route 53 each request for Alias record with one or more IP address for environment. Alias that are AWS Elastic Beanstalk are free. These are as "Intra-AWS-DNS-Queries" Amazon Route 53 usage report.

Q: Can I point my zone apex (example.com versus www.example.com) at my Amazon API Gateway?

Yes. Amazon Route 53 special type of record called "Alias' record that you map your zone apex (example.com) DNS name your Amazon API Gateway DNS name (i.e api-id.execute-api.region.amazonaws.com/stage). IP addresses with Amazon API Gateway can change at any time due up, down, or software. Route 53 each request for Alias record with one or more IP addresses for API Gateway. There no additional charge for Alias that are Amazon API Gateways. These are as 'Intra-AWS-DNS-Queries" Route 53 usage report.

Q. Can I point my zone apex (example.com versus www.example.com) at my Amazon VPC endpoint?

Yes. Amazon Route 53 a special type of record called  ‘Alias’ record that you map your zone apex (example.com) DNS name  your Amazon VPC Endpoint DNS name (i.e. vpce-svc-03d5ebb7d9579a2b3.us-east-1.vpce.amazonaws.com). IP addresses with Amazon VPC can change at any time due up,  down, or software. Route 53 each request for Alias record with one or more IP addresses for VPC endpoint. There no additional charge for Alias that are Amazon VPC endpoints. These are as “Intra-AWS-DNS-Queries” Amazon Route 53 usage report.

Q. How can I use Amazon Route 53 with Amazon Simple Storage Service (Amazon S3) and Amazon CloudFront?

For via Amazon CloudFront or static Amazon S3, you can use Amazon Route 53 service create Alias record for your domain which CloudFront or S3 website bucket. For S3 buckets not host static, you can create CNAME record for your domain and S3 bucket name. In all, note that you will also need configure your S3 bucket or your CloudFront respectively with alternate domain name entry completely establish alias between your domain name and AWS domain name for your bucket or distribution.

For CloudFront and S3 host static, we recommend ‘Alias’ record that your CloudFront distribution or S3 website bucket, instead of using CNAMEs. Alias have two : first, unlike CNAMEs, you can create Alias record for your zone apex (e.g. example.com, instead of www.example.com), and second, Alias are free of charge.

Q. Why does the DNS Query Test Tool return response different than dig or nslookup?

When resource record are Amazon Route 53, service you make your DNS world-wide network of authoritative DNS. If you test record before complete, you may see old value when you use dig or nslookup. Additionally, DNS internet are outside control Amazon Route 53 service and will cache your resource record their time live (TTL), which dig/nslookup command might return value. You should also make sure that your domain name registrar using name your Amazon Route 53 zone. If not, Amazon Route 53 will not be authoritative your domain.

DNS Routing Policies

Q. Amazon Route 53 support Weighted Round Robin (WRR)?

Yes. Weighted Round Robin you assign resource record order specify frequency with different are. You may want use capability do A/B small portion traffic server you’ve made software change. For instance, suppose you have two record with one DNS name—one with weight 3 and one with weight 1. In case, 75% time Route 53 will return record set with weight 3 and 25% of time Route 53 will return record set with weight 1. can be any number between 0 and 255.

Q:  Does Amazon Route 53 support multiple response DNS?

Route 53 now multivalue response DNS. While not substitute for load balance, ability return multiple health-checkable IP addresses response DNS way use DNS improve availability and load balancing. If you want route traffic randomly multiple such as web you can create one multivalue answer record for each resource and optionally, associate Amazon response Route 53 health check with each record. Amazon Route 53 up eight heathy response each DNS query.

Traffic Flow

Q. What Amazon Route 53 Traffic Flow?
Amazon Route 53 Traffic Flow an easy-to-use and cost-effective global traffic management service. With Amazon Route 53 Traffic Flow, you can improve performance and availability of your for your end by multiple around the world, Amazon Route 53 Traffic Flow connect your best endpoint latency, geography, and endpoint health. Amazon Route 53 Traffic Flow it easy for create that route traffic they care most about, latency, endpoint health, load, geoproximity and geography. Can customize these or build from scratch simple visual policy builder AWS Management Console.

Q. What difference between traffic policy and policy record?

A traffic policy set of that you define to route end one of your. You can create traffic policy visual policy builder in Amazon Route 53 Traffic Flow of Amazon Route 53 console. You can also create traffic as JSON text and upload these Route 53 API, AWS CLI, or various AWS SDKs.

By itself, traffic policy doesn’t affect how end are your because it isn’t yet with your DNS name (such as www.example.com). Start Amazon Route 53 Traffic Flow route traffic your traffic policy you’ve, you create policy record  traffic policy with appropriate DNS name within Amazon Route 53 zone that you own. For example, if you want use traffic policy that you’ve my-first-traffic-policy to manage traffic for your at www.example.com, you will create policy record for www.example.com within your zone example.com and choose my-first-traffic-policy traffic policy.

Policy are visible both Amazon Route 53 Traffic Flow and Amazon Route 53 Zone Amazon Route 53 console.

Q. Can I use same policy manage for more than one DNS name?

Yes. You can reuse policy manage more than one DNS name in one of two. First, you can create additional policy policy. Note that there additional charge for method because you are for each policy record that you create.

Second method create one policy record policy, and then for each additional DNS name that you want manage policy, you create standard CNAME record at DNS name of policy record that you. For example, if you create policy record for example.com, you can then create DNS for www.example.com, blog.example.com, and www.example.net with CNAME value of example.com for each record. Note that method not possible for at zone apex, such as example.net, example.org, or example.co.uk (without www or another subdomain in front of domain name). For at zone apex, you must create  policy record your traffic policy.

Q. Can I create Alias record DNS name that by traffic policy?

Yes, it possible create Alias record DNS name that being by traffic policy.


Q. There charge for traffic that don’t have policy record?

No. We only charge for policy; there no charge for traffic policy itself.

Q. How am I for Amazon Route 53 Traffic Flow?

You are per policy record.  Policy record Traffic Flow policy specific DNS name (such as www.example.com) order use traffic policy manage how for that DNS name are. Monthly and for partial. There no charge for traffic that are not with a DNS name via policy record. For details, Amazon Route 53 page.

Traffic Flow continue …

Q. How does traffic policy geoproximity rule route DNS traffic?

When you create traffic flow policy, you can specify either AWS region (if you're using AWS) or latitude and longitude for each endpoint. For example, suppose you have EC2 AWS US East (Ohio) region and US West (Oregon) region. When user Seattle your website, geoproximity will route DNS query EC2 instances US West (Oregon) region because it's closer geographically. For more please see geoproximity.

Q. How does geoproximity bias value of endpoint affect DNS traffic other?

Geoproximity bias value endpoint either or area from which Route 53 traffic resource. Geoproximity bias can't accurately predict load factor, though, because small shift size of geographic might include or exclude major metropolitan that generate large of. For more please refer our documentation.

Q. Can I use bias for other Traffic Flow?

As of today, bias can only be to geoproximity. 

Private DNS

Q. What Private DNS?

Private DNS Route 53 feature that you have authoritative DNS within your VPCs without your DNS (name of resource and IP address(es) Internet.

Q. Can I use Amazon Route 53 manage my private IP addresses?

Yes, you can manage private IP addresses within Virtual Private Clouds (VPCs) using Amazon Route 53’s Private DNS feature. With Private DNS, you can create a private hosted zone, and Route 53 will only return these records when queried from within the VPC(s) that you have associated with your private hosted zone. For more details, see the Amazon Route 53 Documentation.

Q. How do I set up Private DNS?

You can set up Private DNS by zone Route 53, option make zone “private”, and zone with one of your VPCs. After zone, you can associate it with additional VPCs. See Amazon Route 53 Documentation for full how configure Private DNS.

Q. Do I need connectivity outside Internet order use Private DNS?

You can resolve internal DNS from within your VPC that do not have Internet connectivity. However, update for your Private DNS zone, you need Internet connectivity access Route 53 API endpoint, which outside of VPC.

Q. Can I still use Private DNS if I’m not VPC?

No. Route 53 Private DNS uses VPC manage visibility and provide DNS for private DNS. Take advantage of Route 53 Private DNS, you must configure VPC and migrate your into it.

Q. Can I use same private Route 53 zone for multiple VPCs?

Yes, you can associate multiple VPCs with single zone.

Q. Can I associate VPCs and private that I under different AWS?

Yes, you can associate VPCs different with single zone. You can see more here.

Q. Will Private DNS work across AWS?

Yes. DNS will be available within every VPC that you associate with private zone. Note that you will need ensure that VPCs each region have connectivity with each other order for one region be able reach another region. Route 53 Private DNS today US East (Northern Virginia), US West (Northern California), US West (Oregon), Asia Pacific (Mumbai), Asia Pacific (Seoul), Asia Pacific (Singapore), Asia Pacific (Sydney), Asia Pacific (Tokyo), EU (Frankfurt), EU (Ireland), and South America (Sao Paulo).

Q. Can I configure DNS Failover for Private DNS?

Yes, it is possible configure DNS Failover by health with resource record within Private DNS zone. If your are within Virtual Private Cloud (VPC), you have several configure health against these. If have public IP addresses, then you can create standard health check against public IP address of each endpoint. If your only have private IP addresses, then you cannot create standard health against these. However, you can create metric based health, which function like standard Amazon Route 53 health except that they use Amazon CloudWatch metric source of endpoint health instead of against endpoint from external.

Private DNS continue …

Q. Can I use Private DNS block and DNS that I don’t want be from within my VPC?

Yes, you can block and specific DNS by these names one or more Private DNS and these your own server (or another location that you manage).

Health Checks & DNS Failover

Q. What DNS Failover?

DNS Failover of two: health and failover. Health are sent over Internet your verify that your reachable, available, and functional. You can configure health be similar typical made by your, such as web page from a specific URL. With DNS failover, Route 53 only for that are healthy and reachable from outside world, so that your end are away from or unhealthy part of your.

Q. How do I get started with DNS Failover?

Visit Amazon Route 53 Developer Guide for. You can also configure DNS Failover from within the Route 53 Console.

Q. Does DNS Failover support Elastic Load Balancers (ELBs) as endpoints?

Yes, you can configure DNS Failover for Elastic Load Balancers (ELBs). To enable DNS Failover for ELB endpoint, create Alias record ELB and set “Evaluate Target Health” parameter true. Route 53 and health for your ELB automatically. You do not need create your own Route 53 health check of ELB. You also do not need associate your resource record set for ELB with your own health check, because Route 53 automatically it with health that Route 53 your behalf.  ELB health check will also inherit health of your backend behind that ELB. For more using DNS Failover with ELB endpoints, please consult Route 53 Developer Guide.

Q. Can I configure backup site be only when a health check fails?

Yes, you can use DNS Failover maintain backup site (for example, static site Amazon S3 website bucket) and fail over site event that your primary site unreachable.

Q. What DNS record can I associate with Route 53 health?

You can associate any record type by Route 53 except SOA and NS.

Q. Can I health check endpoint if I don’t know IP address?

Yes. You can configure DNS Failover for Elastic Load Balancers and Amazon S3 website via Amazon Route 53 Console without create health check of your own. For these endpoint, Route 53 automatically and health your behalf are used when you create Alias record ELB or S3 website bucket and enable "Evaluate Target Health" parameter Alias record.

For all other endpoints, you can specify either the DNS name (e.g. www.example.com) or the IP address of the endpoint when you create a health check for that endpoint.

Q. One of my outside AWS. Can I set up DNS Failover endpoint?

Yes. Just like you can create Route 53 resource record that address outside AWS, you can set up health for of your outside AWS, and you can fail over any endpoint that you choose, regardless of. For example, you may have legacy in datacenter outside AWS and backup instance of that within AWS. You can set up health of your legacy outside AWS, and if health, you can fail over automatically backup instance in AWS.

Q. If failover and I have multiple healthy, will Route 53 consider load my healthy when where to send traffic from endpoint?

No, Route 53 does not make load or available traffic capacity of your. You will need ensure that you have available capacity at your other, or ability scale at those endpoints, in order handle traffic that had been your endpoint.

Q. How many consecutive health check does endpoint need fail considered “failed”?

Default threshold of three health check: when endpoint has three consecutive, Route 53 will consider it. However, Route 53 will continue perform health check endpoint and will resume traffic it once it three consecutive. You can change threshold any value between 1 and 10. For more, see Amazon Route 53 Developer Guide.
 

Health Checks & DNS Failover continue …

Q. When my endpoint healthy again, how DNS failover?

After endpoint number of consecutive health check that you specify when health check (default threshold three), Route 53 will restore DNS automatically, and traffic that endpoint will resume with no action your part.

Q. What interval between health check?

By default, health check are at interval of 30. You can optionally select fast interval of 10 between.

By three more often, fast interval health enable Route 53 confirm more quickly that endpoint has, time required for DNS failover redirect traffic in response endpoint’s failure.

Fast interval health also generate three number of to your endpoint, may be if your endpoint has capacity serve web traffic. Visit Route 53 page for for fast interval health and other optional health check. For more, see Amazon Route 53 Developer Guide.

Q. How much load should I expect a health check generate my endpoint (for example, web server)?

Each health check from multiple around world. Number and set of configurable; you can modify number of from each your health Amazon Route 53 console or API. Each endpoint independently at interval that you select: default interval of 30, or optional fast interval of 10. Current default number of health, you should expect your endpoint receive one request every 2-3 on average for standard interval health and one or more per second for fast-interval health.

Q. Do Route 53 health follow HTTP?

No. Route 53 health consider HTTP 3xx code be successful response, so they don’t follow redirect. This may cause for string health. Health check for string body of redirect. Because health check doesn’t follow redirect, it never request that redirect and never response from that. For string health, we recommend that you avoid health check at that HTTP redirect.

Q. What sequence of when failover?

In simplest, will take place if health check and failover:

Route 53 health check of your. In example, your three consecutive health.

Route 53 resource for endpoint and no longer these. Failover step, traffic begin being your healthy endpoint(s) instead of your endpoint.

Q. Do I need adjust TTL for my order use DNS Failover?

Time for DNS resolver response set by value time live (TTL) with every record. We recommend TTL of 60 or less when DNS Failover, minimize amount of time it for traffic  stop being your endpoint. In order configure DNS Failover for ELB and S3 Website, you need use Alias have fixed TTL of 60; for these endpoint, you do not need adjust TTLs in order use DNS Failover.

Q. What if all of my are unhealthy?

Route 53 can only fail over endpoint that healthy. If there are no healthy in resource record set, Route 53 will behave as if all health are.

Q. Can I use DNS Failover without Latency Based Routing (LBR)?

Yes. You can configure DNS Failover without using LBR. In particular, you can use DNS failover configure simple failover scenario where Route 53 your primary website and over backup site in event that your primary site unavailable.

Health Checks & DNS Failover continue …

Q. For Alias Amazon S3 Website, what being health when I set Evaluate Target Health “true”?

Amazon Route 53 health of Amazon S3 service itself in each AWS region. When you enable Evaluate Target Health Alias record Amazon S3 Website bucket, Amazon Route 53 will take into account health of Amazon S3 service in AWS region where your bucket. Amazon Route 53 does not check whether specific bucket or valid website content; Amazon Route 53 will only fail over another if Amazon S3 service itself unavailable in AWS region where your bucket.

Q. What cost use CloudWatch for my Route 53 health?

CloudWatch for Route 53 health are available free of charge.

Q. Can I configure DNS Failover based internal health, such as CPU load, network, or memory?

Yes. Amazon Route 53’s metric health let you perform DNS failover on any metric that available within Amazon CloudWatch, AWS and custom from your own. When you create metric health check within Amazon Route 53, health check unhealthy whenever Amazon CloudWatch metric alarm state.

Metric health are useful enable DNS failover for that cannot be by standard Amazon Route 53 health check, such as within Virtual Private Cloud (VPC) that only have private IP addresses. Using Amazon Route 53’s health check feature, you can also accomplish more failover by of metric based health with of standard Amazon Route 53 health, which make against endpoint from a network of around world. For example, you can create which away from endpoint if either public web page unavailable, or if internal such as CPU load, network in/out, or disk show that the server itself unhealthy.

Q. My web server from Route 53 health check that I did not create. How can I stop these?

Occasionally, Amazon Route 53 create health that specify IP address or domain name that does not them. If your web server HTTP(s) that you have Amazon Route 53 health, please provide health check form, and we will work with our customer fix problem.

Q. If I specify domain name as my health check target, will Amazon Route 53 check over IPv4 or IPv6?

If you specify domain name endpoint of Amazon Route 53 health check, Amazon Route 53 will look up IPv4 address of that domain name and will connect endpoint using IPv4. Amazon Route 53 will not attempt look up IPv6 address for endpoint that by domain name. If you want perform health check over IPv6 instead of IPv4, select "IP address" instead of "domain name" as your endpoint type, and enter IPv6 address in “IP address” field.

Q. Where can I find IPv6 address for Amazon Route 53’s DNS and health?

AWS now current IP address in JSON format. View current, download .json file link. If you access file programmatically, ensure that file only after successfully TLS certificate that by AWS server.

Download: ip-ranges.json

To find IP for Route 53, search for in "service" field:

Route 53 DNS : Search for "ROUTE53"

Route 53 health: Search for "ROUTE53_HEALTHCHECKS"

For more, see AWS IP Address Amazon Web Services General Reference.

Please note that IPv6 may not yet appear file. For reference, IPv6 for Amazon Route 53 health are as:

2600:1f1c:7ff:f800::/53
2a05:d018:fff:f800::/53
2600:1f1e:7ff:f800::/53
2600:1f1c:fff:f800::/53
2600:1f18:3fff:f800::/53
2600:1f14:7ff:f800::/53
2600:1f14:fff:f800::/53
2406:da14:7ff:f800::/53
2406:da14:fff:f800::/53
2406:da18:7ff:f800::/53
2406:da1c:7ff:f800::/53
2406:da1c:fff:f800::/53
2406:da18:fff:f800::/53
2600:1f18:7fff:f800::/53
2a05:d018:7ff:f800::/53
2600:1f1e:fff:f800::/53
2620:107:300f::36b7:ff80/122
2a01:578:3::36e4:1000/122
2804:800:ff00::36e8:2840/122
2620:107:300f::36f1:2040/122
2406:da00:ff00::36f3:1fc0/122
2620:108:700f::36f4:34c0/122
2620:108:700f::36f5:a800/122
2400:6700:ff00::36f8:dc00/122
2400:6700:ff00::36fa:fdc0/122
2400:6500:ff00::36fb:1f80/122
2403:b300:ff00::36fc:4f80/122
2403:b300:ff00::36fc:fec0/122
2400:6500:ff00::36ff:fec0/122
2406:da00:ff00::6b17:ff00/122
2a01:578:3::b022:9fc0/122
2804:800:ff00::b147:cf80/122

Health Checks & Failover continue…

Q. Can I configure health check site accessible only via HTTPS?

Yes. Route 53 health over HTTPS, HTTP or TCP.

Q. Do HTTPS health validate endpoint’s SSL certificate?

No, HTTPS health test whether possible connect with endpoint over SSL and whether endpoint valid HTTP response code. However, they do not validate SSL certificate by endpoint.

Q. Do HTTPS health support Server Name Indication (SNI)?

Yes, HTTPS health support SNI.

Q. How can I use health verify that my web server correct content?

You can use Route 53 health check for presence of string in server response by “Enable String Matching” option.  Option can be used check web server verify that HTML it string. Or, you can create status page and use it check health of server from internal or operational perspective. For more, see Amazon Route 53 Developer Guide.

Q. How do I see status of health check that I’ve?

You can view current status of health check, as well as why it has, in Amazon Route 53 console and via Route 53 API.

Additionally, each health check’s are Amazon CloudWatch endpoint’s health and, optionally, latency of endpoint’s response. You can view graph of Amazon CloudWatch metric health tab of Amazon Route 53 console see current and historical of health check. You can also create Amazon CloudWatch alarms metric in order send if status of health check.

Amazon CloudWatch for all of your Amazon Route 53 health are also visible in Amazon CloudWatch console. Each Amazon CloudWatch metric Health Check ID (for example, 01beb6a3-e1c2-4a2b-a0b7-7031e9060a6a) which you can use to identify which health check metric.

Q. How can I measure performance of my Amazon Route 53?
 

Amazon Route 53 health include optional latency measurement feature which data how long it your endpoint respond request. When you enable latency measurement feature, Amazon Route 53 health check will generate additional Amazon CloudWatch time for Amazon Route 53’s health establish and begin data. Amazon Route 53 separate set of latency for each AWS region where Amazon Route 53 health are.

Q. How can I be if one of my health check?

Because each Route 53 health check as CloudWatch metric, you can configure full range of CloudWatch and can be when health check value beyond threshold that you specify. First, in either Route 53 or CloudWatch console, configure CloudWatch alarm health check metric. Then add action and specify email or SNS topic that you want publish your. Please consult Route 53 Developer Guide for full.

Q: I alarm for my health check, but I need re-send confirmation email for alarm's SNS topic. How can I re-send email?

Can be re-sent from SNS console. To find name of SNS topic with alarm, click alarm name within Route 53 console and in box "Send notification to."

Within SNS console, expand list of, and select topic from your alarm. Open "Create Subscription" box and select Email for protocol and enter email address.  "Subscribe" will re-send email.

Q. I’m DNS Failover with Elastic Load Balancers (ELBs). How can I see of these?

Method for up DNS Failover with ELB use Alias with "Evaluate Target Health" option. Because you don't create your own health for ELB when option, there are no specific CloudWatch by Route 53 for these.

You can get health of your load balancer two. First, Elastic Load Balancing that indicate health of load balancer and number of healthy behind it. For CloudWatch for ELB, consult ELB developer guide. Second, you can create your own health check against CNAME by ELB, e.g. elb-example-123456678.us-west-2.elb.amazonaws.com. You won’t use health check for DNS Failover itself (because “Evaluate Target Health” option DNS Failover for you), but you can view CloudWatch for health check and create be if health check.

For complete on DNS Failover with ELB, please consult Route 53 Developer Guide.

 

Domain Name Registration

Q. Can I register domain names with Amazon Route 53?

Yes. You can use AWS Management Console or API register new domain with Route 53. You can also request transfer in domain from other be by Route 53. Domain name are under our Domain Name Registration Agreement.

Q. What Top Level Domains (“TLDs”) do you offer?

Route 53 wide of both generic Top Level Domains (“gTLDs”: for example, .com and .net) and country-code Top Level Domains (“ccTLDs”: for example, .de and .fr). For complete list, please see Route 53 Domain Registration Price List.

Q. How can I register domain name with Route 53?

To get, log into your account and click “Domains”. Then, click big blue “Register Domain” button and complete process.

Q. How long it take register domain name?

TLD you’ve, can take from several. Once domain successfully, it will show up your account.

Q. How long my domain name registered for?

Initial period typically one year, although for some top-level (TLDs) have longer. When you register domain with Amazon Route 53 or you transfer domain Amazon Route 53, we configure domain renew automatically. For more, see for Domain Amazon Route 53 Developer Guide.

Q. What do I need provide register domain name?

In order register domain name, you need provide contact for registrant of domain, name, address, phone number, and email address. If administrative and technical are different, you need provide that contact, too.

Q. Why do I need provide personal register domain?

ICANN, body for domain, that provide contact, name, address, and phone number, for every domain name, and that make publicly available via Whois database. For domain that you register individual (i.e., not company or organization), Route 53 privacy, your personal phone number, email address, and physical address, free of charge. Instead, Whois name and address, along with registrar email address that third may use if they wish contact you.

Q. Route 53 offer privacy for domain names I have?

Yes, Route 53 privacy at no additional charge. Privacy your phone number, email address, and physical address. Your first and last name will be hidden if TLD registry and registrar allow it. When you enable privacy, Whois query for domain will contain address in place of your physical address, and registrar’s name place of your name (if). Your email address will be registrar email address that third may use if they wish contact you. Domain by companies or organizations are eligible for privacy if TLD registry and registrar allow it.

 

Domain Name Registration continue…

Q. Where can I find for specific TLDs?

For list of TLDs please see price list and for specific for each, please see Amazon Route 53 Developer Guide and our Domain Name Agreement.

Q. What name are used register my domain name?

When your domain name we automatically associate your domain with four unique Route 53 name, known set. You can view set for your domain Amazon Route 53 console. They're in zone that we create for you automatically when you register domain.

By default, Route 53 will assign new, unique set for each zone you create. However, you can also use Route 53 API create “reusable set”, you can then apply multiple that you create. For with large of domain, reusable make Route 53 simple, because you can instruct your domain name registrar use same set for all your by Route 53. Feature also makes it possible for you create “white label” name server addresses such as ns1.example.com, ns2.example.com, etc., you can point your Route 53 name. You can then use your “white label” name server addresses as authoritative name for as many of your domain as. For more, see Amazon Route 53 documentation.

Q. Will I be for my name servers?

You will be for zone that Route 53 for your domain name, as well as for DNS against zone that Route 53 your behalf. If you do not wish be for Route 53’s DNS service, you can delete your Route 53 zone. Please note that some TLDs require you have valid name as part of your domain name. For domain name under one of these TLDs, you will need procure DNS service from another provider and enter that name server addresses before you can safely delete your Route 53 zone for that domain name.

Q. What Amazon Registrar, Inc. and what of record?

AWS domain that are with ICANN. Amazon Registrar, Inc. Amazon company that by ICANN register. Registrar of record “Sponsoring Registrar” WHOIS record for your domain indicate registrar your domain with.

Q. Who Gandi?

Amazon reseller of registrar Gandi. As registrar of record, Gandi by ICANN contact registrant verify their contact at time of initial. You MUST verify your contact if by Gandi within first 15 of order prevent your domain name from being. Gandi also out reminder before domain comes up for renewal.

Q. Which top-level Amazon Route 53 register through Amazon Registrar and which it register through Gandi?

See our documentation for list of that you can currently register using Amazon Route 53. List about registrar current registrar of record for each TLD that we sell.

Q. Can I transfer my .com and .net domain from Gandi Amazon?

No. We plan add functionality soon.

Q. What Whois? Why my shown in Whois?

Whois publicly available database for domain names that contact and name that are with a domain name. Anyone can access Whois database by using WHOIS command, widely available. In many operating systems, and it's also available as web many. Internet Corporation for Assigned Names and Numbers (ICANN) that all domain have publicly available contact in case someone get in contact with domain name holder.

Q. How do I transfer my domain name Route 53?

Get, log into your account and click “Domains”. Then, click “Transfer Domain” button at top of screen and complete transfer process. Please make sure before you start transfer process, (1) your domain name at your current registrar, (2) you have privacy on your domain name (if applicable), and (3) that you have valid Authorization Code, or “authcode”, from your current registrar which you will need enter as part of transfer process.

Q. How do I transfer my domain name Amazon Route 53 without my existing web traffic?

First, you need get list of DNS record data for your domain name, generally available in form of “zone file” that you can get from your DNS provider. With DNS record data in hand, you can use Route 53’s Management Console or simple web interface create zone that can store DNS for your domain name and follow transfer process, will include such as  name for your domain name with your zone. Complete domain name transfer process, contact registrar with whom you your domain name and follow transfer process, will include such as name for your domain name with your zone. As soon as your registrar new name server, DNS from your end will start get by Route 53 DNS.

Q. How do I check of my transfer request?

You can view status of domain name “Alerts” section homepage of Route 53 console.

Q. What do I do if my transfer wasn’t successful?

You will need contact your current registrar in order determine why your transfer. Once they have issue, you can resubmit your transfer request.

Q. How do I transfer my domain name different registrar?

In order move your domain name away from Route 53, you need initiate transfer request with your new registrar. They will request domain name be their management.

Q. There limit number I can manage using Amazon Route 53?

Each new Amazon Route 53 account maximum of 50. Complete our request form for higher limit and we will respond your request within two business days.

Q. Does Amazon Route 53 DNS support DNSSEC?

Yes. You can enable DNSSEC for and new public.

Q. How do I transfer domain that has DNSSEC Amazon Route 53?

See our documentation for step-by-step guide your DNSSEC domain Amazon Route 53.

Route 53 Resolver

Q. What Amazon Route 53 Resolver?

Route 53 Resolver regional DNS service that recursive DNS for in EC2 as well as public internet. Functionality available by default in every Amazon Virtual Private Cloud (VPC). For hybrid cloud you can configure conditional and DNS to enable DNS across AWS Direct Connect and AWS Managed VPN.

Q. What recursive DNS?

Amazon Route 53 both Authoritative DNS service and Recursive DNS service. Authoritative DNS final answer DNS query, generally IP address. Clients (such as mobile, cloud, or servers in your datacenter) don’t actually talk directly authoritative DNS, except in very rare. Instead, talk recursive DNS (also known as DNS) which find correct authoritative answer for any DNS query. Route 53 Resolver recursive DNS service.

When query, recursive DNS service like Route 53 Resolver may either be automatically forward query directly specific recursive DNS server, or it may recursively search with root of domain and until it final answer. In either case, once an answer found, recursive DNS server may cache answer for period of time so it can answer subsequent for same name more quickly in future.

Q. What are conditional?

Conditional allow Resolver forward for target IP address of your choice, typically DNS resolver. Rules are at VPC level and can be from one account and across multiple.

Q. What are DNS?

A DNS endpoint one or more elastic network interfaces (ENI) that attach your Amazon Virtual Private Cloud (VPC). Each ENI IP address from subnet space of VPC where it. IP address can then serve as target for DNS forward. Are both for DNS query traffic that you're from VPCs your network and from your network your VPCs over AWS Direct Connect and Managed VPN.


Q. How do I share across?

Route 53 Resolver with AWS Resource Access Manager (RAM) with simple way share their across AWS or within their AWS. Can be one primary account and then across multiple using RAM. Once, still need be VPCs in those before they can take effect. For more, see AWS RAM documentation.

 

Q. What if I decide stop with other?

Those will no longer be usable by you previously them with. That if those were VPCs in those, they will be from those VPCs.

Q. What are available for Route 53 Resolver?

Visit our AWS Region Table see which Route 53 Resolver has.

Q. Does regional support for Route 53 Resolver mean that all of Amazon Route 53 now regional?

No. Amazon Route 53 public and private DNS, traffic flow, health, and domain name are all global.

Q. How do I get with Route 53 Resolver?

Visit Amazon Route 53 developer guide for. You can also configure Resolver from within Amazon Route 53 console.

Route 53 Resolver DNS Firewall
Q: What Amazon Route 53 Resolver DNS Firewall?

A: Amazon Route 53 Resolver DNS Firewall feature that you quickly deploy DNS across all of your Amazon Virtual Private Clouds (VPCs). Route 53 Resolver DNS Firewall you block made for known (i.e. create “denylists”) and allow for (create “allowlists”) when Route 53 Resolver for recursive DNS. You can also quickly get with against common DNS by AWS Domain. Amazon Route 53 Resolver DNS Firewall together with AWS Firewall Manager so you can build DNS Firewall, and then centrally apply those across your VPCs and.

Q: When should I use Route 53 Resolver DNS Firewall?

A: If you want be able filter domain that can be over DNS from within your VPCs, then DNS Firewall for you. It you flexibility that best for your security posture two: (1) If you have strict DNS and want deny all outbound DNS for that aren’t your, you can create such for “walled-garden” approach DNS security. (2) If your allow all outbound DNS within your by default and only ability block DNS for known, you can use DNS Firewall create denylists, include all domain your aware of. DNS Firewall also with AWS Managed Domain that help you protect against and Command-and-Control (C&C) bots.

Q: How does Amazon Route 53 Resolver DNS Firewall differ from other firewall AWS and AWS Marketplace?

A: Route 53 Resolver DNS Firewall network and security AWS by control and visibility Route 53 Resolver DNS traffic (e.g. AmazonProvidedDNS) for your entire VPC.  Your use case, you may choose implement DNS Firewall along your security, such as AWS Network Firewall, Amazon VPC Security Groups, AWS Web Application Firewall rules, or AWS Marketplace appliances.

Q: Can Amazon Route 53 Resolver DNS Firewall manage security across multiple AWS?

A: Yes. Route 53 Resolver DNS Firewall regional feature and secures Route 53 Resolver DNS network traffic at and account level. For policy and governance across multiple, you should use AWS Firewall Manager.

Q: How much does Amazon Route 53 Resolver DNS Firewall cost?

Number of domain within your firewall and number of DNS. Please visit Amazon Route 53 Pricing for more.

Q: Which AWS can I use log and monitor my Amazon Route 53 Resolver DNS Firewall activity?

A: You can log your DNS Firewall activity Amazon S3 bucket or Amazon CloudWatch log for further. You can also use Amazon Kinesis Firehose send your third-party provider.


Q: How do Amazon Route 53 Resolver 53 DNS Firewall and AWS Network Firewall differ against malicious DNS query?

A: Amazon Route 53 Resolver DNS Firewall and AWS Network Firewall both offer against outbound DNS query but for different deployment. Amazon Route 53 Resolver DNS Firewall deliver granular control block DNS or if you are Amazon Route 53 Resolver for DNS. AWS Network Firewall similar filter/block outbound DNS known if you are external DNS service resolve DNS.