Has both IPv4 (A) and IPv6 (AAAA) addresses.
| Website over IPv6 secure-cb8154.xyz has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3033::6815:45f7 answers · 443✓ 2606:4700:3037::ac43:d813 answers · 443 | yes |
| www over IPv6 www.secure-cb8154.xyz has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::ac43:d813 answers · 443✓ 2606:4700:3033::6815:45f7 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. david.ns.cloudflare.com ✓davina.ns.cloudflare.com ✓ | yes |
| HTTPS over IPv6 · not part of the grade yet Loads over IPv6 with a valid certificate: HTTP 200. https://secure-cb8154.xyz/ via 2606:4700:3033::6815:45f7 → 200 | works |
secure-cb8154.xyz Has IPv6
| A (IPv4) | 172.67.216.19 104.21.69.247 |
|---|---|
| AAAA (IPv6) | 2606:4700:3033::6815:45f7 2606:4700:3037::ac43:d813 |
www.secure-cb8154.xyz Has IPv6
| A (IPv4) | 104.21.69.247 172.67.216.19 |
|---|---|
| AAAA (IPv6) | 2606:4700:3037::ac43:d813 2606:4700:3033::6815:45f7 |
Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).
Permanent link: aaaa.bot/r/zwdxP_UP4w · How we measure
Checked 2026-11-14 00:57:19 UTC. Full DNS report: dns.pizza/domain/secure-cb8154.xyz · Age, certificate and blocklists: how.is/secure-cb8154.xyz · JSON: /api/v1/secure-cb8154.xyz