Has both IPv4 (A) and IPv6 (AAAA) addresses.
| Website over IPv6 ferretcheck.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3033::ac43:ae30 answers · 443✓ 2606:4700:3035::6815:1eef answers · 443 | yes |
| www over IPv6 www.ferretcheck.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3035::6815:1eef answers · 443✓ 2606:4700:3033::ac43:ae30 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. noor.ns.cloudflare.com ✓theo.ns.cloudflare.com ✓ | yes |
| HTTPS over IPv6 · not part of the grade yet Loads over IPv6 with a valid certificate: HTTP 200. https://ferretcheck.com/ via 2606:4700:3033::ac43:ae30 → 200 | works |
ferretcheck.com Has IPv6
| A (IPv4) | 104.21.30.239 172.67.174.48 |
|---|---|
| AAAA (IPv6) | 2606:4700:3033::ac43:ae30 2606:4700:3035::6815:1eef |
www.ferretcheck.com Has IPv6
| A (IPv4) | 172.67.174.48 104.21.30.239 |
|---|---|
| AAAA (IPv6) | 2606:4700:3035::6815:1eef 2606:4700:3033::ac43:ae30 |
Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).
Permanent link: aaaa.bot/r/Di6X2Qxus_ · How we measure
Checked 2026-11-13 17:43:06 UTC. Full DNS report: dns.pizza/domain/ferretcheck.com · Age, certificate and blocklists: how.is/ferretcheck.com · JSON: /api/v1/ferretcheck.com