Yes — ampproject.org has IPv6.

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

B
IPv6 readiness
Works over IPv6, with one gap: www doesn't fully work over IPv6.
Website over IPv6
ampproject.org has 4 IPv6 addresses and answers on every one we tested.
✓ 2607:f8b0:4004:c09::64 answers · 443✓ 2607:f8b0:4004:c09::8b answers · 443✓ 2607:f8b0:4004:c09::65 answers · 443✓ 2607:f8b0:4004:c09::66 answers · 443
yes
www over IPv6
www.ampproject.org has no AAAA record.		no
Mail servers (MX) have IPv6
Every mail server has an AAAA record.
smtp.google.com ✓
yes
Nameservers have IPv6
4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
ns3.google.com ✓ns2.google.com ✓ns4.google.com ✓ns1.google.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Redirects to www.ampproject.org, which has no IPv6 address — so IPv6 visitors end up needing IPv4 after all.
https://ampproject.org/ via 2607:f8b0:4004:c09::64 → 302https://www.ampproject.org/ · redirects to www.ampproject.org, which has no IPv6 address
problem
 Load ampproject.org over IPv6 from up to six other places — a second opinion.

What's keeping ampproject.org from an A

  1. Add IPv6 for www.ampproject.org
    www.ampproject.org has no AAAA record. Get www's IPv6 address from whoever hosts www and add it as an AAAA record. If the same server already serves both names (and its certificate covers www), you can reuse ampproject.org's AAAA record(s) for www. How to add an AAAA record
  2. A redirect leads off IPv6
    Redirects to www.ampproject.org, which has no IPv6 address — so IPv6 visitors end up needing IPv4 after all. Give the redirect target IPv6 too, or redirect somewhere that has it.

Check again

ampproject.org  Has IPv6

A (IPv4)192.178.218.138
192.178.218.113
192.178.218.102
192.178.218.139
192.178.218.101
192.178.218.100
AAAA (IPv6)2607:f8b0:4004:c09::64
2607:f8b0:4004:c09::8b
2607:f8b0:4004:c09::65
2607:f8b0:4004:c09::66

www.ampproject.org  IPv4 only

A (IPv4)199.36.158.100
AAAA (IPv6)none

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/7cVkaBEKQ0 · How we measure

Checked 2026-10-30 22:04:32 UTC — one of the top 1,000 sites, re-checked weekly. Re-check now. Full DNS report: dns.pizza/domain/ampproject.org · JSON: /api/v1/ampproject.org