Yes — open-win.click has IPv6.

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

A
IPv6 readiness
Website, mail and DNS all work over IPv6.
Website over IPv6
open-win.click has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3031::ac43:d92c answers · 443✓ 2606:4700:3033::6815:5654 answers · 443
yes
www over IPv6
www.open-win.click has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3031::ac43:d92c answers · 443✓ 2606:4700:3033::6815:5654 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
2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
amber.ns.cloudflare.com ✓patryk.ns.cloudflare.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Answered over IPv6 with a server error (HTTP 523) — can't tell whether that's specific to IPv6.
https://open-win.click/ via 2606:4700:3031::ac43:d92c → 523
?
 Which outside scripts, fonts, payments or chat open-win.click loads from have no IPv6.
 Load open-win.click 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/open-win.click.svg)](https://aaaa.bot/open-win.click)

Check again

open-win.click  Has IPv6

A (IPv4)104.21.86.84
172.67.217.44
AAAA (IPv6)2606:4700:3031::ac43:d92c
2606:4700:3033::6815:5654

www.open-win.click  Has IPv6

A (IPv4)104.21.86.84
172.67.217.44
AAAA (IPv6)2606:4700:3031::ac43:d92c
2606:4700:3033::6815:5654

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/x09Tc56ARL · How we measure

Checked 2026-11-11 20:15:25 UTC. Full DNS report: dns.pizza/domain/open-win.click · Age, certificate and blocklists: how.is/open-win.click · JSON: /api/v1/open-win.click