Has both IPv4 (A) and IPv6 (AAAA) addresses.
| Website over IPv6 jzc123.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3034::ac43:8f7d answers · 443✓ 2606:4700:3032::6815:5f45 answers · 443 | yes |
| www over IPv6 www.jzc123.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3032::6815:5f45 answers · 443✓ 2606:4700:3034::ac43:8f7d 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://jzc123.com/ via 2606:4700:3034::ac43:8f7d → 403 | works |
jzc123.com Has IPv6
| A (IPv4) | 104.21.95.69 172.67.143.125 |
|---|---|
| AAAA (IPv6) | 2606:4700:3034::ac43:8f7d 2606:4700:3032::6815:5f45 |
www.jzc123.com Has IPv6
| A (IPv4) | 104.21.95.69 172.67.143.125 |
|---|---|
| AAAA (IPv6) | 2606:4700:3032::6815:5f45 2606:4700:3034::ac43:8f7d |
Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).
Permanent link: aaaa.bot/r/V6Dq5PNatq · How we measure
Checked 2026-11-05 21:16:17 UTC. Full DNS report: dns.pizza/domain/jzc123.com · Age, certificate and blocklists: how.is/jzc123.com · JSON: /api/v1/jzc123.com