Has both IPv4 (A) and IPv6 (AAAA) addresses.
| Website over IPv6 crawlsentry.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3033::ac43:c167 answers · 443✓ 2606:4700:3032::6815:39e4 answers · 443 | yes |
| www over IPv6 www.crawlsentry.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3032::6815:39e4 answers · 443✓ 2606:4700:3033::ac43:c167 answers · 443 | yes |
| Mail servers (MX) have IPv6 Every mail server has an AAAA record. route3.mx.cloudflare.net ✓route1.mx.cloudflare.net ✓route2.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. elsa.ns.cloudflare.com ✓nick.ns.cloudflare.com ✓ | yes |
| HTTPS over IPv6 · not part of the grade yet Loads over IPv6 with a valid certificate: HTTP 200. https://crawlsentry.com/ via 2606:4700:3033::ac43:c167 → 200 | works |
crawlsentry.com Has IPv6
| A (IPv4) | 172.67.193.103 104.21.57.228 |
|---|---|
| AAAA (IPv6) | 2606:4700:3033::ac43:c167 2606:4700:3032::6815:39e4 |
www.crawlsentry.com Has IPv6
| A (IPv4) | 172.67.193.103 104.21.57.228 |
|---|---|
| AAAA (IPv6) | 2606:4700:3032::6815:39e4 2606:4700:3033::ac43:c167 |
Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).
Permanent link: aaaa.bot/r/iTUA_Tvim4 · How we measure
Checked 2026-11-10 05:30:32 UTC. Full DNS report: dns.pizza/domain/crawlsentry.com · Age, certificate and blocklists: how.is/crawlsentry.com · JSON: /api/v1/crawlsentry.com