Yes — securebrowsingatlas.xyz has IPv6.

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

B
IPv6 readiness
Works over IPv6, with one gap: its mail servers lack IPv6.
Website over IPv6
securebrowsingatlas.xyz has an AAAA record and answers on it.
✓ 2604:2dc0:104:da56:f18c:72a4:9bd:c3e7 answers · 443
yes
Mail servers (MX) have IPv6
None of the mail servers has an AAAA record.
eforward1.registrar-servers.com ✗eforward2.registrar-servers.com ✗eforward3.registrar-servers.com ✗eforward4.registrar-servers.com ✗eforward5.registrar-servers.com ✗
no
Nameservers have IPv6
2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
dns1.registrar-servers.com ✓dns2.registrar-servers.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Redirects to www.msn.com, which has no IPv6 address — so IPv6 visitors end up needing IPv4 after all.
https://securebrowsingatlas.xyz/ via 2604:2dc0:104:da56:f18c:72a4:9bd:c3e7 → 307https://www.msn.com/ · redirects to www.msn.com, which has no IPv6 address
problem
 Which outside scripts, fonts, payments or chat securebrowsingatlas.xyz loads from have no IPv6.
 Load securebrowsingatlas.xyz over IPv6 from up to six other places — a second opinion.

What's keeping securebrowsingatlas.xyz from an A

  1. A redirect leads off IPv6
    Redirects to www.msn.com, 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.
  2. Mail servers without IPv6
    eforward1.registrar-servers.com, eforward2.registrar-servers.com, eforward3.registrar-servers.com, eforward4.registrar-servers.com, eforward5.registrar-servers.com have no AAAA record, so mail from IPv6-only servers can't reach them directly. If a provider runs your mail, that's their setting; if you run it, add AAAA records for these hosts.

Check again

securebrowsingatlas.xyz  Has IPv6

A (IPv4)135.148.25.137
AAAA (IPv6)2604:2dc0:104:da56:f18c:72a4:9bd:c3e7

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/IcRAeONlRm · How we measure

Checked 2026-11-07 10:22:43 UTC. Full DNS report: dns.pizza/domain/securebrowsingatlas.xyz · Age, certificate and blocklists: how.is/securebrowsingatlas.xyz · JSON: /api/v1/securebrowsingatlas.xyz