AAAA Record Lookup
Check AAAA records (IPv6 addresses) for any domain across 12 global DNS resolvers. Free real-time DNS propagation checker.
What is an AAAA record?
An AAAA record ("quad-A") maps a hostname to an IPv6 address. It's the IPv6 equivalent of an A record. As IPv6 deployment grows, dual-stack hosts publish both A (IPv4) and AAAA (IPv6) records, and clients prefer IPv6 when both are available.
When to check AAAA records
- You're rolling out IPv6 and need to confirm the AAAA record is live worldwide
- A user on an IPv6-only network reports the site is unreachable
- You're auditing dual-stack readiness for a domain
- You're verifying that disabling IPv6 (removing the AAAA) actually propagated
FAQ
Why does a domain have both A and AAAA records?
That's a "dual-stack" deployment. The domain works on both IPv4 and IPv6 networks. Clients on dual-stack networks (most modern OSes) try IPv6 first via "Happy Eyeballs" and fall back to IPv4 if the IPv6 connection fails or is slow.
Will every resolver return AAAA records the same way?
Yes — AAAA is a standard record type. Differences between resolvers usually mean stale cache, not protocol issues.
All record-type lookups
WhereIsDNS has dedicated pages for each common DNS record type. Each one defaults the tool to that record type and includes background on what the record means and what to look for.
- A Record Lookup — IPv4 addresses for a hostname
- CNAME Lookup — Aliases pointing one hostname to another
- MX Record Lookup — Mail servers for a domain (with priorities)
- NS Record Lookup — Authoritative nameservers for a domain
- TXT Record Lookup — SPF, DKIM, DMARC, and other text records
- SOA Record Lookup — Authority metadata for a DNS zone
- CAA Record Lookup — Which CAs may issue certs for the domain
- PTR (Reverse DNS) Lookup — Reverse DNS — IP back to a hostname
- Home (defaults to A records)