Has both IPv4 (A) and IPv6 (AAAA) addresses.
| Website over IPv6 f9zk.buzz has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3030::6815:487a answers · 443✓ 2606:4700:3035::ac43:b81c answers · 443 | yes |
| www over IPv6 www.f9zk.buzz has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3030::6815:487a answers · 443✓ 2606:4700:3035::ac43:b81c 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. abdullah.ns.cloudflare.com ✓lisa.ns.cloudflare.com ✓ | yes |
| HTTPS over IPv6 · not part of the grade yet Loads over IPv6 with a valid certificate: HTTP 403. https://f9zk.buzz/ via 2606:4700:3030::6815:487a → 403 | works |
f9zk.buzz Has IPv6
| A (IPv4) | 172.67.184.28 104.21.72.122 |
|---|---|
| AAAA (IPv6) | 2606:4700:3030::6815:487a 2606:4700:3035::ac43:b81c |
www.f9zk.buzz Has IPv6
| A (IPv4) | 104.21.72.122 172.67.184.28 |
|---|---|
| AAAA (IPv6) | 2606:4700:3030::6815:487a 2606:4700:3035::ac43:b81c |
Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).
Permanent link: aaaa.bot/r/R9zVNq8bqf · How we measure
Checked 2026-11-13 10:47:09 UTC. Full DNS report: dns.pizza/domain/f9zk.buzz · Age, certificate and blocklists: how.is/f9zk.buzz · JSON: /api/v1/f9zk.buzz