Yes — sso.tagesschau.de has IPv6.

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

A
IPv6 readiness
Website, mail and DNS all work over IPv6.
Website over IPv6
sso.tagesschau.de has 2 IPv6 addresses and answers on every one we tested.
✓ 2a02:26f0:9b00:496::1df7 answers · 443✓ 2a02:26f0:9b00:49c::1df7 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
4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
ns-cloud-e3.googledomains.com ✓ns-cloud-e2.googledomains.com ✓ns-cloud-e4.googledomains.com ✓ns-cloud-e1.googledomains.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 403.
https://sso.tagesschau.de/ via 2a02:26f0:9b00:496::1df7 → 403
works
 Load sso.tagesschau.de 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/sso.tagesschau.de.svg)](https://aaaa.bot/sso.tagesschau.de)

Check again

sso.tagesschau.de  Has IPv6

Alias ofsso.tagesschau.de.edgekey.net → e7671.dsce6.akamaiedge.net
A (IPv4)2.18.139.51
AAAA (IPv6)2a02:26f0:9b00:496::1df7
2a02:26f0:9b00:49c::1df7

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/Hul3QhwReX · How we measure

Checked 2026-11-01 10:28:47 UTC. Full DNS report: dns.pizza/domain/sso.tagesschau.de · JSON: /api/v1/sso.tagesschau.de