Yes — mozilla.com has IPv6.

Has both IPv4 (A) and IPv6 (AAAA) addresses.

A
IPv6 readiness
Website, mail and DNS all work over IPv6.
Website over IPv6
mozilla.com has an AAAA record and answers on it.
✓ 2600:1901:0:c197:: answers · 443
yes
www over IPv6
www.mozilla.com has an AAAA record and answers on it.
✓ 2600:1901:0:c197:: answers · 443
yes
Mail servers (MX) have IPv6
Every mail server has an AAAA record.
aspmx.l.google.com ✓aspmx3.googlemail.com ✓alt1.aspmx.l.google.com ✓alt2.aspmx.l.google.com ✓
yes
Nameservers have IPv6
1 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
ns1-240.akam.net ✓ns5-65.akam.net ✗ns4-64.akam.net ✗ns7-66.akam.net ✗
yes

First measured 2026-10-31; last confirmed 2026-10-31.

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 2 redirects: HTTP 200.
https://mozilla.com/ via 2600:1901:0:c197:: → 301https://www.mozilla.org/firefox via 2a04:4e42:400::787 → 301https://www.firefox.com/ via 2a04:4e42::787 → 200
works
 Load mozilla.com over IPv6 from up to six other places — a second opinion.

Nothing keeping you from an A

  1. Nothing to fix
    Show it off: add the badge to your README.
    [![IPv6](https://aaaa.bot/badge/mozilla.com.svg)](https://aaaa.bot/mozilla.com)

Check again

mozilla.com  Has IPv6

A (IPv4)35.190.14.201
AAAA (IPv6)2600:1901:0:c197::

www.mozilla.com  Has IPv6

Alias ofprod.refractr.prod.webservices.mozgcp.net
A (IPv4)35.190.14.201
AAAA (IPv6)2600:1901:0:c197::

Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).

Copy the evidence — a citation-ready record of this measurement

 Permanent link: aaaa.bot/r/M75PHmGvat · How we measure

Checked 2026-10-31 00:04:31 UTC — one of the top 1,000 sites, re-checked weekly. Re-check now. Full DNS report: dns.pizza/domain/mozilla.com · JSON: /api/v1/mozilla.com