Yes — official-support-jp.com has IPv6.

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

B
IPv6 readiness
Works over IPv6, with one gap: its nameservers lack IPv6.
Website over IPv6
official-support-jp.com has an AAAA record and answers on it.
✓ 2400:8500:1301:162::17:1 answers · 443
yes
www over IPv6
www.official-support-jp.com has an AAAA record and answers on it.
✓ 2400:8500:1301:162::17:1 answers · 443
yes
Mail servers (MX) have IPv6
Every mail server has an AAAA record.
official-support-jp.com ✓
yes
Nameservers have IPv6
No nameserver has an AAAA record — an IPv6-only resolver can't reach this domain's DNS.
ns1.value-domain.com ✗ns2.value-domain.com ✗
no
HTTPS over IPv6 · not part of the grade yet
The certificate served over IPv6 at 2400:8500:1301:162::17:1 isn't valid for official-support-jp.com: ERR_TLS_CERT_ALTNAME_INVALID.
https://official-support-jp.com/ via 2400:8500:1301:162::17:1 · ERR_TLS_CERT_ALTNAME_INVALID
problem
 Which outside scripts, fonts, payments or chat official-support-jp.com loads from have no IPv6.
 Load official-support-jp.com over IPv6 from up to six other places — a second opinion.

What's keeping official-support-jp.com from an A

  1. The certificate served over IPv6 is wrong
    The certificate served over IPv6 at 2400:8500:1301:162::17:1 isn't valid for official-support-jp.com: ERR_TLS_CERT_ALTNAME_INVALID. Often the IPv6 address points at a different server (or an old one) than IPv4 does. Make sure 2400:8500:1301:162::17:1 serves the same certificate as your IPv4 address.
  2. Nameservers without IPv6
    ns1.value-domain.com, ns2.value-domain.com all have no AAAA record, so a resolver that only speaks IPv6 can't look your domain up. Most DNS providers offer IPv6 nameservers; ask yours, or move DNS to one that does.

Check again

official-support-jp.com  Has IPv6

A (IPv4)163.44.176.17
AAAA (IPv6)2400:8500:1301:162::17:1

www.official-support-jp.com  Has IPv6

A (IPv4)163.44.176.17
AAAA (IPv6)2400:8500:1301:162::17:1

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/UwZeEvbJgk · How we measure

Checked 2026-11-12 18:33:23 UTC. Full DNS report: dns.pizza/domain/official-support-jp.com · Age, certificate and blocklists: how.is/official-support-jp.com · JSON: /api/v1/official-support-jp.com