No AAAA record — add IPv6
2026-07-06
· updated 2026-09-02
Problem
The domain has A (IPv4) records but no AAAA (IPv6) record.
Why it matters
- Mobile carriers and new ISPs increasingly run IPv6-only networks with translation layers; native IPv6 is faster and more reliable there.
- IPv4 exhaustion makes CGNAT paths slower and harder to debug.
- IPv6 adoption is a public-internet health metric — every dual-stacked site helps.
How to fix
- Check whether your hosting/CDN already has an IPv6 address (most CDNs do — it is one switch).
- Add the
AAAArecord next to the existingArecord. - Verify the web server listens on
[::]:443and the firewall allows IPv6. - Test:
dig AAAA yourdomain.comand https://test-ipv6.com.