DNS Tools

AAAA Record Lookup

Check whether a domain has an IPv6 address (AAAA record) and see what it is.

Not sure what to enter? Try an example: google.com

Free & instant No signup How to use FAQ

Enter a domain to see its AAAA records - the IPv6 addresses visitors on modern mobile and broadband networks may connect to.

What is an AAAA record?

An AAAA ("quad-A") record maps a domain name to an IPv6 address, the same way an A record does for IPv4. Visitors on IPv6-capable networks use it to reach your site; if it points to a server that is not listening on IPv6, those visitors cannot connect.

How to look up AAAA records

Enter the domain or subdomain in the box above.
Click Look Up AAAA.
If an address is listed, confirm your server really accepts IPv6 connections on it.
If no AAAA record exists, the site is reached over IPv4 only - which is fine, but adding IPv6 improves reach.

Related checks

For IPv4 addresses, use the A Record Lookup.
To see all of a website's server addresses and reverse DNS, use IP Address Lookup.

An IPv6 record that points to a server which no longer answers can make a site fail for mobile users only, which is hard to spot from a desktop. JustChecker watches the AAAA record along with uptime so a stale IPv6 address does not go unnoticed.

Frequently Asked Questions

It is not required, but a growing share of mobile users connect over IPv6. Without an AAAA record they still reach you through IPv4 translation, sometimes a little slower.

Yes. If the AAAA record points to an address where your server isn't listening, IPv6 visitors may see a timeout while everything looks fine to you on IPv4. Remove or correct it.

Most hosts and cloud providers assign one on request or by default. Add it as an AAAA record next to your existing A record.

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