Yes — rossmann.pl 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
rossmann.pl has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700::6812:4a01 answers · 443✓ 2606:4700::6812:4b01 answers · 443
yes
www over IPv6
www.rossmann.pl has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700::6812:4a01 answers · 443✓ 2606:4700::6812:4b01 answers · 443
yes
Mail servers (MX) have IPv6
None of the mail servers has an AAAA record.
rossmann-pl.mail.protection.outlook.com ✗
no
Nameservers have IPv6
2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
chloe.ns.cloudflare.com ✓major.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://rossmann.pl/ via 2606:4700::6812:4a01 → 301https://www.rossmann.pl/ via 2606:4700::6812:4a01 → 200
works
 Load rossmann.pl over IPv6 from up to six other places — a second opinion.

What's keeping rossmann.pl from an A

  1. Mail servers without IPv6
    rossmann-pl.mail.protection.outlook.com has no AAAA record, so mail from IPv6-only servers can't reach it directly. If a provider runs your mail, that's their setting; if you run it, add AAAA records for these hosts.

Check again

rossmann.pl  Has IPv6

A (IPv4)104.18.75.1
104.18.74.1
AAAA (IPv6)2606:4700::6812:4a01
2606:4700::6812:4b01

www.rossmann.pl  Has IPv6

A (IPv4)104.18.75.1
104.18.74.1
AAAA (IPv6)2606:4700::6812:4a01
2606:4700::6812:4b01

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/HYZbwm7HsP · How we measure

Checked 2026-11-05 16:00:19 UTC. Full DNS report: dns.pizza/domain/rossmann.pl · Age, certificate and blocklists: how.is/rossmann.pl · JSON: /api/v1/rossmann.pl