Has both IPv4 (A) and IPv6 (AAAA) addresses.
| Website over IPv6 tver13.org has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3036::6815:180e answers · 443✓ 2606:4700:3035::ac43:d848 answers · 443 | yes |
| www over IPv6 www.tver13.org has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3036::6815:180e answers · 443✓ 2606:4700:3035::ac43:d848 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. alex.ns.cloudflare.com ✓nia.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://tver13.org/ via 2606:4700:3036::6815:180e → 530 | ? |
tver13.org Has IPv6
| A (IPv4) | 172.67.216.72 104.21.24.14 |
|---|---|
| AAAA (IPv6) | 2606:4700:3036::6815:180e 2606:4700:3035::ac43:d848 |
www.tver13.org Has IPv6
| A (IPv4) | 172.67.216.72 104.21.24.14 |
|---|---|
| AAAA (IPv6) | 2606:4700:3036::6815:180e 2606:4700:3035::ac43:d848 |
Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).
Permanent link: aaaa.bot/r/St-EAByE35 · How we measure
Checked 2026-11-11 09:42:35 UTC. Full DNS report: dns.pizza/domain/tver13.org · Age, certificate and blocklists: how.is/tver13.org · JSON: /api/v1/tver13.org