What is a AAAA record?

A AAAA (quad-A) record maps a domain name to an IPv6 address. It is the IPv6 equivalent of the A record, which maps to IPv4 addresses.

Do I need a AAAA record?

If your server supports IPv6, you should add a AAAA record. IPv6 adoption is growing and having a AAAA record ensures your site is accessible to IPv6-only networks.

What does an IPv6 address look like?

IPv6 addresses are 128-bit addresses written as eight groups of four hexadecimal digits: 2001:0db8:85a3:0000:0000:8a2e:0370:7334. Leading zeros can be omitted and consecutive zero groups can be replaced with ::.

Can a domain have both A and AAAA records?

Yes. This is called dual-stack. When a client connects, it prefers IPv6 (AAAA) if available. If IPv6 fails, it falls back to IPv4 (A record). Most modern websites support dual-stack.

Why does my domain have no AAAA record?

Many hosting providers do not yet support IPv6 by default. Check your hosting provider's documentation to enable IPv6 support and add a AAAA record.

AAAA Record Lookup - Free IPv6 DNS Checker Tool

The AAAA Record Lookup tool enables you to check DNS AAAA records for any domain, providing complete IPv6 address information. As IPv6 adoption continues to grow globally, AAAA records become increasingly important for ensuring your website is accessible to IPv6-enabled networks. This comprehensive tool displays IPv6 addresses, TTL values, and helps verify your domain's IPv6 configuration across multiple DNS resolvers.

Understanding IPv6 and AAAA Records

AAAA records (quad-A records) are the IPv6 equivalent of A records, mapping domain names to 128-bit IPv6 addresses. These records enable dual-stack configurations where domains can serve both IPv4 and IPv6 traffic. The tool shows complete IPv6 addresses in their standard hexadecimal format and indicates whether your domain properly supports modern IPv6 connectivity. You can check both root domains and subdomains for comprehensive IPv6 coverage analysis.

IPv6 Implementation Best Practices

When implementing IPv6, ensure your hosting provider supports IPv6 connectivity before adding AAAA records. Configure both A and AAAA records for optimal dual-stack performance, allowing clients to prefer IPv6 while maintaining IPv4 fallback capability. Set consistent TTL values between your A and AAAA records to ensure synchronized DNS caching. Test IPv6 connectivity thoroughly using this tool after making any DNS changes.

SEO and Performance Benefits

IPv6 support demonstrates technical sophistication and future-readiness to search engines. Many mobile networks and modern infrastructure prefer IPv6 connections, potentially offering better performance and reduced latency. Regular AAAA record monitoring ensures your website remains accessible to the growing IPv6 user base, preventing potential traffic loss from IPv6-only networks and improving overall user experience metrics.

AAAA Record Lookup - Free IPv6 DNS Checker Tool