Yes — xn--mrkborg-90a.com 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
xn--mrkborg-90a.com has an AAAA record and answers on it.
✓ 2a00:1158:0:100::14 answers · 80
yes
www over IPv6
www.xn--mrkborg-90a.com has an AAAA record and answers on it.
✓ 2a00:1158:0:100::14 answers · 80
yes
Mail servers (MX) have IPv6
None of the mail servers has an AAAA record.
smtp.secureserver.net ✗mailstore1.secureserver.net ✗
no
Nameservers have IPv6
2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
ns66.domaincontrol.com ✓ns65.domaincontrol.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
xn--mrkborg-90a.com didn't complete an HTTPS request over IPv6 (ECONNREFUSED).
https://xn--mrkborg-90a.com/ via 2a00:1158:0:100::14 · ECONNREFUSED
?
 Load xn--mrkborg-90a.com over IPv6 from up to six other places — a second opinion.

What's keeping xn--mrkborg-90a.com from an A

  1. Mail servers without IPv6
    smtp.secureserver.net, mailstore1.secureserver.net 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

xn--mrkborg-90a.com  Has IPv6

A (IPv4)80.67.16.8
AAAA (IPv6)2a00:1158:0:100::14

www.xn--mrkborg-90a.com  Has IPv6

A (IPv4)80.67.16.8
AAAA (IPv6)2a00:1158:0:100::14

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/i0Va193B69 · How we measure

Checked 2026-11-03 23:19:30 UTC. Full DNS report: dns.pizza/domain/xn--mrkborg-90a.com · Age, certificate and blocklists: how.is/xn--mrkborg-90a.com · JSON: /api/v1/xn--mrkborg-90a.com