DNS guide
AAAA Record Setup Guide
An AAAA record maps a hostname to an IPv6 address — the IPv6 equivalent of an A record. Most modern servers support IPv6. Adding AAAA records alongside A records ensures your domain works for IPv6 clients.
Example
Note for email
If your mail server has an IPv6 address, add a PTR record for the IPv6 address too. DomainPreflight DNS Preflight checks IPv6 PTR records — enter your IPv6 sending address in the IP field.
Check AAAA propagation
Open Propagation checker →IPv6 PTR and full mail checks
Open DNS Preflight →Step by step
FAQ
What is an AAAA record?
A DNS record mapping a hostname to an IPv6 address. The IPv6 equivalent of an A record.
Do I need both A and AAAA records?
Not required but recommended. A record covers IPv4 clients. AAAA covers IPv6. Most modern servers support both.
Does my mail server need an AAAA record?
Only if it has an IPv6 address. If it does, also add a PTR record for the IPv6 address — some receivers check IPv6 PTR too.
How do I check my AAAA record is propagated?
DomainPreflight Propagation checker — select AAAA type and enter your domain.
Will adding AAAA break my existing A record?
No. A and AAAA records coexist at the same hostname without conflict.