Has both IPv4 (A) and IPv6 (AAAA) addresses.
| Website over IPv6 octap.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::ac43:cbe2 answers · 443✓ 2606:4700:3034::6815:4d1c answers · 443 | yes |
| www over IPv6 www.octap.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3034::6815:4d1c answers · 443✓ 2606:4700:3037::ac43:cbe2 answers · 443 | yes |
| Mail servers (MX) have IPv6 Every mail server has an AAAA record. route2.mx.cloudflare.net ✓route1.mx.cloudflare.net ✓route3.mx.cloudflare.net ✓ | yes |
| Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. austin.ns.cloudflare.com ✓bethany.ns.cloudflare.com ✓ | yes |
| HTTPS over IPv6 · not part of the grade yet Loads over IPv6 with a valid certificate: HTTP 200. https://octap.app/ via 2606:4700:3037::ac43:cbe2 → 200 | works |
octap.app Has IPv6
| A (IPv4) | 172.67.203.226 104.21.77.28 |
|---|---|
| AAAA (IPv6) | 2606:4700:3037::ac43:cbe2 2606:4700:3034::6815:4d1c |
www.octap.app Has IPv6
| A (IPv4) | 104.21.77.28 172.67.203.226 |
|---|---|
| AAAA (IPv6) | 2606:4700:3034::6815:4d1c 2606:4700:3037::ac43:cbe2 |
Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).
Permanent link: aaaa.bot/r/JE6axQsBxS · How we measure
Checked 2026-11-10 20:16:03 UTC. Full DNS report: dns.pizza/domain/octap.app · Age, certificate and blocklists: how.is/octap.app · JSON: /api/v1/octap.app