Has both IPv4 (A) and IPv6 (AAAA) addresses.
| Website over IPv6 zu4wlo.cfd has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::ac43:cee2 answers · 443✓ 2606:4700:3034::6815:16c4 answers · 443 | yes |
| www over IPv6 www.zu4wlo.cfd has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3034::6815:16c4 answers · 443✓ 2606:4700:3031::ac43:cee2 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. cameron.ns.cloudflare.com ✓rosemary.ns.cloudflare.com ✓ | yes |
| HTTPS over IPv6 · not part of the grade yet Loads over IPv6 with a valid certificate: HTTP 200. https://zu4wlo.cfd/ via 2606:4700:3031::ac43:cee2 → 200 | works |
zu4wlo.cfd Has IPv6
| A (IPv4) | 172.67.206.226 104.21.22.196 |
|---|---|
| AAAA (IPv6) | 2606:4700:3031::ac43:cee2 2606:4700:3034::6815:16c4 |
www.zu4wlo.cfd Has IPv6
| A (IPv4) | 104.21.22.196 172.67.206.226 |
|---|---|
| AAAA (IPv6) | 2606:4700:3034::6815:16c4 2606:4700:3031::ac43:cee2 |
Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).
Permanent link: aaaa.bot/r/4tY49N7Fjr · How we measure
Checked 2026-11-12 23:04:50 UTC. Full DNS report: dns.pizza/domain/zu4wlo.cfd · Age, certificate and blocklists: how.is/zu4wlo.cfd · JSON: /api/v1/zu4wlo.cfd