Has both IPv4 (A) and IPv6 (AAAA) addresses.
| Website over IPv6 rxjxcd.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3033::ac43:a67a answers · 443✓ 2606:4700:3031::6815:4b10 answers · 443 | yes |
| www over IPv6 www.rxjxcd.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::6815:4b10 answers · 443✓ 2606:4700:3033::ac43:a67a 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. bowen.ns.cloudflare.com ✓emma.ns.cloudflare.com ✓ | yes |
| HTTPS over IPv6 · not part of the grade yet Loads over IPv6 with a valid certificate: HTTP 403. https://rxjxcd.com/ via 2606:4700:3033::ac43:a67a → 403 | works |
rxjxcd.com Has IPv6
| A (IPv4) | 104.21.75.16 172.67.166.122 |
|---|---|
| AAAA (IPv6) | 2606:4700:3033::ac43:a67a 2606:4700:3031::6815:4b10 |
www.rxjxcd.com Has IPv6
| A (IPv4) | 172.67.166.122 104.21.75.16 |
|---|---|
| AAAA (IPv6) | 2606:4700:3031::6815:4b10 2606:4700:3033::ac43:a67a |
Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).
Permanent link: aaaa.bot/r/E4oREzSagx · How we measure
Checked 2026-11-06 06:25:21 UTC. Full DNS report: dns.pizza/domain/rxjxcd.com · Age, certificate and blocklists: how.is/rxjxcd.com · JSON: /api/v1/rxjxcd.com