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AAAA Record Lookup
An AAAA record maps a name to an IPv6 address — the IPv6 counterpart of an A record. Check whether a domain is reachable over IPv6, and that every resolver sees the same addresses.
About AAAA records
What the answer tells you
- A name with both A and AAAA records is dual-stack. Clients with IPv6 connectivity usually prefer the AAAA address.
- A stale AAAA record is a common cause of a site that works for some visitors and times out for others: IPv6 clients try the broken address first.
- Addresses are shown in compressed form, with a run of zero groups written as ::.
example.com. 300 IN AAAA 2606:2800:220:1:248:1893:25c8:1946
Record types
Look up any record type
Each type has a page of its own, explaining what the record does and what to look for in the answer.
- AA Record LookupIPv4 address
- AAAAAAAA Record LookupIPv6 address
- CNAMECNAME LookupAlias
- MXMX LookupMail servers
- TXTTXT Record LookupText, SPF and DMARC
- NSNS LookupNameservers
- SOASOA Record LookupZone authority
- CAACAA Record LookupCertificate authorities
- SRVSRV Record LookupService locations
- PTRReverse DNS LookupReverse DNS (PTR)
Questions
Frequently asked questions
- My domain has no AAAA record — is that a problem?
- No. An IPv4-only site works for every visitor today, since IPv6 clients fall back to IPv4. Adding an AAAA record only helps if your server actually listens on IPv6.
- Why does my site fail for some visitors only?
- Check for an AAAA record pointing at an address your server no longer answers on. Visitors with IPv6 try it first and may wait for a timeout before falling back to IPv4.
- What is DNS propagation?
- DNS does not push changes out. Each resolver keeps an answer for its TTL and only asks again once that runs out, so after a change different resolvers return old and new answers for a while. When every column here agrees with the authoritative one, the change has reached them.
- What does the authoritative column show?
- The answer from one of the domain's own nameservers, which never comes from a cache. It shows what the zone says right now; the resolver columns show what the internet has cached.