An AAAA record does for IPv6 what an A record does for IPv4: it connects a name to an address. IPv6 addresses are longer and written in groups separated by colons, such as 2001:db8::1.
Add an AAAA record
- Open the domain's DNS records: Domains → the domain → Manage DNS.
- Under Add a record, choose AAAA.

- Name — empty for the domain itself, or the part in front, such as
www. - Value — the server's IPv6 address.
- Choose a TTL and click Add record.
Do I need one?
Only if your server has an IPv6 address. Keep the A record as well: visitors whose network supports IPv6 use the AAAA record, and everyone else uses the A record.
Important
Don't add an AAAA record for an address the server doesn't actually answer on. Visitors on IPv6 would try it first and see the site fail to load.