Yes — youtube-nocookie.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
youtube-nocookie.com has 4 IPv6 addresses and answers on every one we tested.
✓ 2607:f8b0:4004:c1b::5b answers · 443✓ 2607:f8b0:4004:c1b::88 answers · 443✓ 2607:f8b0:4004:c1b::be answers · 443✓ 2607:f8b0:4004:c1b::5d answers · 443
yes
www over IPv6
www.youtube-nocookie.com has 4 IPv6 addresses and answers on every one we tested.
✓ 2607:f8b0:4004:c1f::88 answers · 443✓ 2607:f8b0:4004:c23::88 answers · 443✓ 2607:f8b0:4004:c23::be answers · 443✓ 2607:f8b0:4004:c23::5b answers · 443
yes
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
The certificate served over IPv6 at 2607:f8b0:4004:c1b::5b isn't valid for youtube-nocookie.com: ERR_TLS_CERT_ALTNAME_INVALID.
https://youtube-nocookie.com/ via 2607:f8b0:4004:c1b::5b · ERR_TLS_CERT_ALTNAME_INVALID
problem
 Load youtube-nocookie.com over IPv6 from up to six other places — a second opinion.

Nothing keeping you from an A

  1. The certificate served over IPv6 is wrong
    The certificate served over IPv6 at 2607:f8b0:4004:c1b::5b isn't valid for youtube-nocookie.com: ERR_TLS_CERT_ALTNAME_INVALID. Often the IPv6 address points at a different server (or an old one) than IPv4 does. Make sure 2607:f8b0:4004:c1b::5b serves the same certificate as your IPv4 address.

Check again

youtube-nocookie.com  Has IPv6

A (IPv4)142.251.16.91
142.251.16.93
142.251.16.136
142.251.16.190
AAAA (IPv6)2607:f8b0:4004:c1b::5b
2607:f8b0:4004:c1b::88
2607:f8b0:4004:c1b::be
2607:f8b0:4004:c1b::5d

www.youtube-nocookie.com  Has IPv6

Alias ofyoutube-ui.l.google.com
A (IPv4)142.251.179.190
64.233.180.136
64.233.180.91
172.253.139.91
142.251.16.190
142.251.16.136
192.178.218.93
192.178.218.190
142.251.167.136
142.251.167.190
192.178.155.93
192.178.155.91
192.178.155.190
142.251.179.91
142.251.179.136
142.251.179.93
AAAA (IPv6)2607:f8b0:4004:c1f::88
2607:f8b0:4004:c23::88
2607:f8b0:4004:c23::be
2607:f8b0:4004:c23::5b

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/04yeb9tHBh · How we measure

Checked 2026-10-31 01:43:41 UTC. Full DNS report: dns.pizza/domain/youtube-nocookie.com · JSON: /api/v1/youtube-nocookie.com