SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/aplus-aaaa-record

Which DNS record type maps a name to an IPv6 address?

AAAA (quad A) stores a single IPv6 address.

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  1. A
  2. CNAME
  3. AAAA ✔

Why: An AAAA record holds one IPv6 address. An A record holds an IPv4 address and a CNAME makes an alias. The name hints at it, since IPv6 addresses are four times as long as IPv4.

Huh, didn't know that: The IANA type number for AAAA is 28.

The dad joke
Why is the AAAA record so loud? It has four A's of IPv6 to shout about.
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References

Answer: AAAA. An AAAA record holds one IPv6 address. An A record holds an IPv4 address and a CNAME makes an alias. The name hints at it, since IPv6 addresses are four times as long as IPv4.

  1. RFC 3596 www.rfc-editor.org/rfc/rfc3596
    The AAAA resource record type is a record specific to the Internet class that stores a single IPv6 address.
    Checked 2026-10-10.

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