Yes — stuttgart.de 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
stuttgart.de has an AAAA record and answers on it.
✓ 2606:4700:7::277 answers · 443
yes
www over IPv6
www.stuttgart.de has an AAAA record and answers on it.
✓ 2606:4700:7::277 answers · 443
yes
Mail servers (MX) have IPv6
None of the mail servers has an AAAA record.
x104s32.stuttgart.de ✗x104s31.stuttgart.de ✗
no
Nameservers have IPv6
3 of 3 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
ns2.arcor-ip.de ✓ns3.arcor-ip.de ✓ns1.arcor-ip.de ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.
https://stuttgart.de/ via 2606:4700:7::277 → 302https://www.stuttgart.de/ via 2606:4700:7::277 → 200
works
 Which outside scripts, fonts, payments or chat stuttgart.de loads from have no IPv6.
 Load stuttgart.de over IPv6 from up to six other places — a second opinion.

What's keeping stuttgart.de from an A

  1. Mail servers without IPv6
    x104s32.stuttgart.de, x104s31.stuttgart.de 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

stuttgart.de  Has IPv6

A (IPv4)162.159.142.131
AAAA (IPv6)2606:4700:7::277

www.stuttgart.de  Has IPv6

Alias ofstuttgart.de
A (IPv4)162.159.142.131
AAAA (IPv6)2606:4700:7::277

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/BbdC7UIiGu · How we measure

Checked 2026-11-15 15:54:02 UTC. Full DNS report: dns.pizza/domain/stuttgart.de · Age, certificate and blocklists: how.is/stuttgart.de · JSON: /api/v1/stuttgart.de