Yes — cookiedatabase.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
cookiedatabase.org has 3 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:20::681a:97d answers · 443✓ 2606:4700:20::681a:87d answers · 443✓ 2606:4700:20::ac43:471a answers · 443
yes
www over IPv6
www.cookiedatabase.org has no AAAA record.		no
Mail servers (MX) have IPv6
Every mail server has an AAAA record.
mx10.onlinemailscanner.com ✓mx20.onlinemailscanner.com ✓mx30.onlinemailscanner.com ✓mx40.onlinemailscanner.com ✓
yes
Nameservers have IPv6
2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
daisy.ns.cloudflare.com ✓plato.ns.cloudflare.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 403.
https://cookiedatabase.org/ via 2606:4700:20::681a:97d → 403
works
 Load cookiedatabase.org over IPv6 from up to six other places — a second opinion.

What's keeping cookiedatabase.org from an A

  1. Add IPv6 for www.cookiedatabase.org
    www.cookiedatabase.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 cookiedatabase.org's AAAA record(s) for www. How to add an AAAA record

Check again

cookiedatabase.org  Has IPv6

A (IPv4)104.26.9.125
104.26.8.125
172.67.71.26
AAAA (IPv6)2606:4700:20::681a:97d
2606:4700:20::681a:87d
2606:4700:20::ac43:471a

www.cookiedatabase.org  IPv4 only

A (IPv4)194.150.224.133
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/_TYPvtRKyt · How we measure

Checked 2026-10-31 08:36:13 UTC. Full DNS report: dns.pizza/domain/cookiedatabase.org · JSON: /api/v1/cookiedatabase.org