Has both IPv4 (A) and IPv6 (AAAA) addresses.
| Website over IPv6 ducnm.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::ac43:c00d answers · 443✓ 2606:4700:3033::6815:1460 answers · 443 | yes |
| www over IPv6 www.ducnm.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3033::6815:1460 answers · 443✓ 2606:4700:3037::ac43:c00d 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. ignacio.ns.cloudflare.com ✓jillian.ns.cloudflare.com ✓ | yes |
| HTTPS over IPv6 · not part of the grade yet Answered over IPv6 with a server error (HTTP 530) — can't tell whether that's specific to IPv6. https://ducnm.com/ via 2606:4700:3037::ac43:c00d → 530 | ? |
ducnm.com Has IPv6
| A (IPv4) | 104.21.20.96 172.67.192.13 |
|---|---|
| AAAA (IPv6) | 2606:4700:3037::ac43:c00d 2606:4700:3033::6815:1460 |
www.ducnm.com Has IPv6
| A (IPv4) | 172.67.192.13 104.21.20.96 |
|---|---|
| AAAA (IPv6) | 2606:4700:3033::6815:1460 2606:4700:3037::ac43:c00d |
Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).
Permanent link: aaaa.bot/r/_QHbXbrUsw · How we measure
Checked 2026-11-10 07:30:45 UTC. Full DNS report: dns.pizza/domain/ducnm.com · Age, certificate and blocklists: how.is/ducnm.com · JSON: /api/v1/ducnm.com