Has both IPv4 (A) and IPv6 (AAAA) addresses.
| Website over IPv6 sinit4u.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3034::6815:2838 answers · 443✓ 2606:4700:3032::ac43:b079 answers · 443 | yes |
| www over IPv6 www.sinit4u.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3032::ac43:b079 answers · 443✓ 2606:4700:3034::6815:2838 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. celeste.ns.cloudflare.com ✓corey.ns.cloudflare.com ✓ | yes |
| HTTPS over IPv6 · not part of the grade yet Loads over IPv6 with a valid certificate: HTTP 200. https://sinit4u.com/ via 2606:4700:3034::6815:2838 → 200 | works |
sinit4u.com Has IPv6
| A (IPv4) | 104.21.40.56 172.67.176.121 |
|---|---|
| AAAA (IPv6) | 2606:4700:3034::6815:2838 2606:4700:3032::ac43:b079 |
www.sinit4u.com Has IPv6
| A (IPv4) | 172.67.176.121 104.21.40.56 |
|---|---|
| AAAA (IPv6) | 2606:4700:3032::ac43:b079 2606:4700:3034::6815:2838 |
Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).
Permanent link: aaaa.bot/r/ZzON4uahXh · How we measure
Checked 2026-11-02 09:56:33 UTC. Full DNS report: dns.pizza/domain/sinit4u.com · JSON: /api/v1/sinit4u.com