Yes — 3b.observer has IPv6.

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

A
IPv6 readiness
Website, mail and DNS all work over IPv6.
Website over IPv6
3b.observer has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3032::6815:5fe answers · 443✓ 2606:4700:3036::ac43:8619 answers · 443
yes
Mail servers (MX) have IPv6
No MX records, so mail goes to the domain's own address (implicit MX). It has an AAAA record.		yes
Nameservers have IPv6
2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
damien.ns.cloudflare.com ✓wren.ns.cloudflare.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.
https://3b.observer/ via 2606:4700:3032::6815:5fe → 302https://3b.observer/login via 2606:4700:3032::6815:5fe → 200
works
 Load 3b.observer 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/3b.observer.svg)](https://aaaa.bot/3b.observer)

Check again

3b.observer  Has IPv6

A (IPv4)172.67.134.25
104.21.5.254
AAAA (IPv6)2606:4700:3032::6815:5fe
2606:4700:3036::ac43:8619

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/pcfd2UddA5 · How we measure

Checked 2026-10-31 14:22:46 UTC. Full DNS report: dns.pizza/domain/3b.observer · JSON: /api/v1/3b.observer