Yes — staging.allwyn.cz has IPv6.

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

A
IPv6 readiness
Website, mail and DNS all work over IPv6.
Website over IPv6
staging.allwyn.cz has 2 IPv6 addresses and answers on every one we tested.
✓ 2600:1408:ec00:b::1727:ae9c answers · 443✓ 2600:1408:ec00:b::1730:cbb8 answers · 443
yes
Mail servers (MX) have IPv6
No MX records, so mail goes to the domain's own address (implicit MX). It has an AAAA record.		yes
Nameservers have IPv6
6 of 6 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
a1-19.akam.net ✓a3-67.akam.net ✓a8-66.akam.net ✓a9-67.akam.net ✓a14-65.akam.net ✓a18-64.akam.net ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 403.
https://staging.allwyn.cz/ via 2600:1408:ec00:b::1727:ae9c → 403
works
 Load staging.allwyn.cz over IPv6 from up to six other places — a second opinion.

Nothing keeping you from an A

  1. Nothing to fix
    Show it off: add the badge to your README.
    [![IPv6](https://aaaa.bot/badge/staging.allwyn.cz.svg)](https://aaaa.bot/staging.allwyn.cz)

Check again

staging.allwyn.cz  Has IPv6

Alias ofstaging.allwyn.cz.edgekey.net → e366931.dscb.akamaiedge.net
A (IPv4)23.39.174.156
23.48.203.184
AAAA (IPv6)2600:1408:ec00:b::1727:ae9c
2600:1408:ec00:b::1730:cbb8

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/vVku0vW3_3 · How we measure

Checked 2026-11-05 18:45:28 UTC. Full DNS report: dns.pizza/domain/staging.allwyn.cz · Age, certificate and blocklists: how.is/staging.allwyn.cz · JSON: /api/v1/staging.allwyn.cz