DNS record that maps a domain name to an IPv6 address. Think of it as the IPv6 sibling to the A record—same job, newer protocol.
When someone visits your domain over IPv6 (the 128-bit address space that actually has room for everything), their resolver looks up the AAAA record to find where to connect. The record itself is a simple pointer: domain → IPv6 address (format: 2001:0db8:85a3::8a2e:0370:7334).
Why it matters: IPv6 adoption is slow but steady. Most major hosting providers and CDNs now support it. If you don't publish an AAAA record, visitors on IPv6-only networks simply won't reach you. If you do publish one pointing to the wrong IP, you've got connectivity problems. Both A and AAAA records can coexist—dual-stack is the standard now.
Technically it's defined in RFC 3596. Practically, you set it via your registrar's DNS panel or your authoritative nameserver's zone file. Bunkerdomains doesn't host DNS, but we point you to providers who handle both A and AAAA without drama.