Yes — xn--fnfsigma-65a.com has IPv6.

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

A
IPv6 readiness
Website, mail and DNS all work over IPv6.
Website over IPv6
xn--fnfsigma-65a.com has an AAAA record and answers on it.
✓ 2a01:4f8:d0a:27bd::2 answers · 443
yes
www over IPv6
www.xn--fnfsigma-65a.com has an AAAA record and answers on it.
✓ 2a01:4f8:d0a:27bd::2 answers · 443
yes
Mail servers (MX) have IPv6
Every mail server has an AAAA record.
www4.your-server.de ✓
yes
Nameservers have IPv6
3 of 3 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
ns1.your-server.de ✓ns3.second-ns.de ✓ns.second-ns.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
The certificate served over IPv6 at 2a01:4f8:d0a:27bd::2 isn't valid for xn--fnfsigma-65a.com: ERR_TLS_CERT_ALTNAME_INVALID.
https://xn--fnfsigma-65a.com/ via 2a01:4f8:d0a:27bd::2 · ERR_TLS_CERT_ALTNAME_INVALID
problem
 Which outside scripts, fonts, payments or chat xn--fnfsigma-65a.com loads from have no IPv6.
 Load xn--fnfsigma-65a.com over IPv6 from up to six other places — a second opinion.

Nothing keeping you from an A

  1. The certificate served over IPv6 is wrong
    The certificate served over IPv6 at 2a01:4f8:d0a:27bd::2 isn't valid for xn--fnfsigma-65a.com: ERR_TLS_CERT_ALTNAME_INVALID. Often the IPv6 address points at a different server (or an old one) than IPv4 does. Make sure 2a01:4f8:d0a:27bd::2 serves the same certificate as your IPv4 address.

Check again

xn--fnfsigma-65a.com  Has IPv6

A (IPv4)88.198.219.246
AAAA (IPv6)2a01:4f8:d0a:27bd::2

www.xn--fnfsigma-65a.com  Has IPv6

A (IPv4)88.198.219.246
AAAA (IPv6)2a01:4f8:d0a:27bd::2

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/q_auseQOy1 · How we measure

Checked 2026-11-09 19:57:58 UTC. Full DNS report: dns.pizza/domain/xn--fnfsigma-65a.com · Age, certificate and blocklists: how.is/xn--fnfsigma-65a.com · JSON: /api/v1/xn--fnfsigma-65a.com