Yes — pluguniversity.credit 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
pluguniversity.credit has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3031::ac43:ce27 answers · 443✓ 2606:4700:3037::6815:5ae9 answers · 443
yes
Mail servers (MX) have IPv6
None of the mail servers has an AAAA record.
mx01.mail.icloud.com ✗mx02.mail.icloud.com ✗
no
Nameservers have IPv6
2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
collins.ns.cloudflare.com ✓frank.ns.cloudflare.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 403.
https://pluguniversity.credit/ via 2606:4700:3031::ac43:ce27 → 403
works
 Which outside scripts, fonts, payments or chat pluguniversity.credit loads from have no IPv6.
 Load pluguniversity.credit over IPv6 from up to six other places — a second opinion.

What's keeping pluguniversity.credit from an A

  1. Mail servers without IPv6
    mx01.mail.icloud.com, mx02.mail.icloud.com 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

pluguniversity.credit  Has IPv6

A (IPv4)104.21.90.233
172.67.206.39
AAAA (IPv6)2606:4700:3031::ac43:ce27
2606:4700:3037::6815:5ae9

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/x3KJQIr8JT · How we measure

Checked 2026-11-06 09:09:27 UTC. Full DNS report: dns.pizza/domain/pluguniversity.credit · Age, certificate and blocklists: how.is/pluguniversity.credit · JSON: /api/v1/pluguniversity.credit