What is the difference between an alias record and a CNAME?

An alias record is a Route 53-specific extension that maps a domain name to an AWS resource (ALB, CloudFront, S3) at the DNS protocol level, returning the resource's IP addresses directly. Unlike CNAMEs, alias records work at the zone apex (e.g., example.com) and incur no Route 53 query charges when pointing to AWS resources.

Does this tool create records in my AWS account?

No. This tool runs entirely in your browser and generates configuration snippets you can copy into the AWS CLI, CloudFormation templates, or Terraform files. It never accesses your AWS account.

What routing policies does Route 53 support?

Route 53 supports simple, weighted, latency-based, failover, geolocation, geoproximity, multivalue answer, and IP-based routing policies. Each policy controls how Route 53 responds to DNS queries, enabling traffic distribution, disaster recovery, and regional routing strategies.

Route 53 Record Builder

NetworkingAWS

Build Route 53 DNS record configurations for A, AAAA, CNAME, MX, TXT, and alias records.

DNS Record Configuration

Record Type

Maps a hostname to an IPv4 address, e.g. 192.0.2.1

Record Mode

Hostname

Hosted Zone ID

TTL (seconds)

Values (one per line)

Health Check ID (optional)

Output

Output will appear here...

About This Tool

The Route 53 Record Builder helps you construct DNS record configurations for Amazon Route 53 hosted zones. It supports all common record types including A, AAAA, CNAME, MX, TXT, SRV, and alias records with routing policies like weighted, latency-based, failover, and geolocation. The tool generates ready-to-use configurations for the AWS CLI, CloudFormation, and Terraform, reducing syntax errors in DNS management.

When to Use This Tool

•Creating alias records that point a domain apex to an ALB, CloudFront distribution, or S3 website endpoint.
•Building weighted routing records to gradually shift traffic during blue-green deployments.
•Configuring MX and TXT records for email delivery services like SES, Google Workspace, or Microsoft 365.
•Generating Terraform or CloudFormation DNS record resources for infrastructure-as-code repositories.

Frequently Asked Questions

What is the difference between an alias record and a CNAME?: An alias record is a Route 53-specific extension that maps a domain name to an AWS resource (ALB, CloudFront, S3) at the DNS protocol level, returning the resource's IP addresses directly. Unlike CNAMEs, alias records work at the zone apex (e.g., example.com) and incur no Route 53 query charges when pointing to AWS resources.
Does this tool create records in my AWS account?: No. This tool runs entirely in your browser and generates configuration snippets you can copy into the AWS CLI, CloudFormation templates, or Terraform files. It never accesses your AWS account.
What routing policies does Route 53 support?: Route 53 supports simple, weighted, latency-based, failover, geolocation, geoproximity, multivalue answer, and IP-based routing policies. Each policy controls how Route 53 responds to DNS queries, enabling traffic distribution, disaster recovery, and regional routing strategies.

Related Learning Guides

Route 53 DNS Patterns24 min read
AWS Networking Deep Dive30 min read

Disclaimer: This tool runs entirely in your browser. No data is sent to our servers. Always verify outputs before using them in production. AWS, Azure, and GCP are trademarks of their respective owners.