dnsName

Alias resource record sets only: The value that you specify depends on where you want to route queries:

Amazon API Gateway custom regional APIs and edge-optimized APIs

Specify the applicable domain name for your API. You can get the applicable value using the CLI command get-domain-names:

• For regional APIs, specify the value of regionalDomainName.

• For edge-optimized APIs, specify the value of distributionDomainName. This is the name of the associated CloudFront distribution, such as da1b2c3d4e5.cloudfront.net.

The name of the record that you're creating must match a custom domain name for your API, such as api.example.com.

Amazon Virtual Private Cloud interface VPC endpoint

Enter the API endpoint for the interface endpoint, such as vpce-123456789abcdef01-example-us-east-1a.elasticloadbalancing.us-east-1.vpce.amazonaws.com. For edge-optimized APIs, this is the domain name for the corresponding CloudFront distribution. You can get the value of DnsName using the CLI command describe-vpc-endpoints.

CloudFront distribution

Specify the domain name that CloudFront assigned when you created your distribution.

Your CloudFront distribution must include an alternate domain name that matches the name of the resource record set. For example, if the name of the resource record set is acme.example.com, your CloudFront distribution must include acme.example.com as one of the alternate domain names. For more information, see Using Alternate Domain Names (CNAMEs) in the Amazon CloudFront Developer Guide.

You can't create a resource record set in a private hosted zone to route traffic to a CloudFront distribution.

For failover alias records, you can't specify a CloudFront distribution for both the primary and secondary records. A distribution must include an alternate domain name that matches the name of the record. However, the primary and secondary records have the same name, and you can't include the same alternate domain name in more than one distribution.

Elastic Beanstalk environment

If the domain name for your Elastic Beanstalk environment includes the region that you deployed the environment in, you can create an alias record that routes traffic to the environment. For example, the domain name my-environment.us-west-2.elasticbeanstalk.com is a regionalized domain name.

For environments that were created before early 2016, the domain name doesn't include the region. To route traffic to these environments, you must create a CNAME record instead of an alias record. Note that you can't create a CNAME record for the root domain name. For example, if your domain name is example.com, you can create a record that routes traffic for acme.example.com to your Elastic Beanstalk environment, but you can't create a record that routes traffic for example.com to your Elastic Beanstalk environment.

For Elastic Beanstalk environments that have regionalized subdomains, specify the CNAME attribute for the environment. You can use the following methods to get the value of the CNAME attribute:

• Amazon Web Services Management Console: For information about how to get the value by using the console, see Using Custom Domains with Elastic Beanstalk in the Elastic Beanstalk Developer Guide.

• Elastic Beanstalk API: Use the DescribeEnvironments action to get the value of the CNAME attribute. For more information, see DescribeEnvironments in the Elastic Beanstalk API Reference.

• CLI: Use the describe-environments command to get the value of the CNAME attribute. For more information, see describe-environments in the CLI Command Reference.

ELB load balancer

Specify the DNS name that is associated with the load balancer. Get the DNS name by using the Amazon Web Services Management Console, the ELB API, or the CLI.

• Amazon Web Services Management Console: Go to the EC2 page, choose Load Balancers in the navigation pane, choose the load balancer, choose the Description tab, and get the value of the DNS name field.

  If you're routing traffic to a Classic Load Balancer, get the value that begins with dualstack. If you're routing traffic to another type of load balancer, get the value that applies to the record type, A or AAAA.

• Elastic Load Balancing API: Use DescribeLoadBalancers to get the value of DNSName. For more information, see the applicable guide:

  • Classic Load Balancers: DescribeLoadBalancers

  • Application and Network Load Balancers: DescribeLoadBalancers

• CLI: Use describe-load-balancers to get the value of DNSName. For more information, see the applicable guide:

  • Classic Load Balancers: describe-load-balancers

  • Application and Network Load Balancers: describe-load-balancers

Global Accelerator accelerator

Specify the DNS name for your accelerator:

• Global Accelerator API: To get the DNS name, use DescribeAccelerator.

• CLI: To get the DNS name, use describe-accelerator.

Amazon S3 bucket that is configured as a static website

Specify the domain name of the Amazon S3 website endpoint that you created the bucket in, for example, s3-website.us-east-2.amazonaws.com. For more information about valid values, see the table Amazon S3 Website Endpoints in the Amazon Web Services General Reference. For more information about using S3 buckets for websites, see Getting Started with Amazon Route 53 in the Amazon Route 53 Developer Guide.

Another Route 53 resource record set

Specify the value of the Name element for a resource record set in the current hosted zone.

If you're creating an alias record that has the same name as the hosted zone (known as the zone apex), you can't specify the domain name for a record for which the value of Type is CNAME. This is because the alias record must have the same type as the record that you're routing traffic to, and creating a CNAME record for the zone apex isn't supported even for an alias record.