AAAA record lookup
Shows the IPv6 address published for a domain. Having no AAAA record is not a fault in itself; it means the domain is not served over IPv6 yet.
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What the AAAA record lookup shows
An AAAA record lookup shows the IPv6 address or addresses published for a name, with the TTL of each. The query is sent to Cloudflare's 1.1.1.1 from the IPVIEW server over the toolkit's own DNS engine, UDP first and TCP if truncated, so the page shows what a public resolver answers and not what your local network has cached or rewritten.
Having no AAAA record is not a fault: the name is not served over IPv6 yet, and a dual-stack client simply uses the A record. The reverse is the problem worth finding: an AAAA record pointing at a host that does not answer over IPv6 makes the site slow or unreachable for dual-stack visitors, who try that address first and wait for it to fail.
How to read the result
The table lists Name, Value and TTL, with addresses in compressed form. If the name is an alias the rows carry the CNAME target's name and the alias appears under Along the way. This page shows the time left on 1.1.1.1's cached copy, in seconds; the Full report asks the zone's own nameservers and grades their TTL, under 60 seconds very short and above a day very long.
An empty answer is read from the response code. No AAAA record means the zone answered and has no IPv6 address there, the common case. The name does not exist at all means NXDOMAIN. The query failed means the resolver got no answer and nothing about the zone follows. Under an empty answer the authority section shows the SOA and how long resolvers hold the negative answer, which matters if you have just added the record.
When it is useful
Before claiming a site is available over IPv6, and after enabling it: see whether the record is published and with which address, then confirm the host answers on it, since a published address that is not served is worse than none. Ping and Check one port both take an IPv6 address typed as is (a name is resolved to its IPv4 address) and run from the IPVIEW origin nearest you; a No route answer means that origin has no IPv6 path and says nothing about your server.
When dual-stack visitors complain a site is slow while everyone else is fine, compare this record with the A record: if the IPv6 host is down, the AAAA record is what sends them there first. The Full report lists A and AAAA side by side with their TTLs.
Common questions
What is an AAAA record?
The record that maps a name to an IPv6 address, the counterpart of the A record. A name may have several, and a dual-stack client tries the AAAA addresses before falling back to A.
Is it a problem that my domain has no AAAA record?
No. The site is reachable over IPv4 only, and clients with IPv6 fall back without noticing. A broken AAAA record is a problem; a missing one is not.
Why does the AAAA record lookup show other records too?
Only AAAA records are in the main table. Under Along the way are the records the resolver returned beside the answer, nearly always the CNAME it followed to reach the target.
Limits. The DNS, WHOIS and SSL tools allow up to 20 requests a minute per IP address. Ping, traceroute and MTR send real packets to their target, so they allow 6 a minute.
The port check runs only against your own IP address. That is deliberate: the question people actually have, "is this port reachable from outside?", is answered by it, while this server cannot be used to scan anyone else's network.
Private and reserved addresses. These are refused by the tools that really connect to their target: the SSL check, ping, traceroute, MTR and the port check. The DNS tools have no such limit, because they only ask a nameserver a question and never connect to the address itself.