DNS record field guide
How to read a AAAA record check
AAAA records map a hostname to an IPv6 address.
When to use this lookup
Use this check when enabling IPv6, debugging dual-stack reachability or confirming that an old IPv6 destination has expired from recursive caches.
Example
2606:2800:220:1:248:1893:25c8:1946
- Answer shape
- One or more colon-separated IPv6 addresses, each with its own TTL.
- Common failure
- A stale AAAA record keeps sending IPv6-capable clients to an endpoint that no longer accepts IPv6 traffic.
- Related checks
- A record, CNAME record
Troubleshooting checklist
- Verify the host actually listens on the published IPv6 address.
- Check A and AAAA together when only one address family fails.
- Remove stale AAAA records when a service is no longer reachable over IPv6.