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

How to fix

  1. Check whether your hosting/CDN already has an IPv6 address (most CDNs do — it is one switch).
  2. Add the AAAA record next to the existing A record.
  3. Verify the web server listens on [::]:443 and the firewall allows IPv6.
  4. Test: dig AAAA yourdomain.com and https://test-ipv6.com.