AAAA

AAAA Record

Active

The AAAA record maps a domain name to an IPv6 address.

name TTL IN AAAA ipv6-address

In one line

The AAAA record maps a domain name to an IPv6 address. It is the IPv6 equivalent of the A record. As IPv4 addresses become scarce and IPv6 adoption grows, AAAA records are increasingly important for modern web infrastructure.

Description

The AAAA (Quad-A) record maps a hostname to a 128-bit IPv6 address. Named because IPv6 addresses are four times the size of IPv4 addresses, AAAA records are essential for IPv6 connectivity. Modern DNS resolvers return both A and AAAA records when available, with clients preferring IPv6 (Happy Eyeballs algorithm).

Examples

Basic AAAA record

shell

example.com.    300    IN    AAAA    2606:2800:220:1:248:1893:25c8:1946

Lookup with dig

shell

dig example.com AAAA

;; ANSWER SECTION:
example.com.    300    IN    AAAA    2606:2800:220:1:248:1893:25c8:1946

Related Record Types

Specification

RFC 3596 – DNS AAAA record specification →