Has both IPv4 (A) and IPv6 (AAAA) addresses.
| Website over IPv6 customerschainotc.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3036::6815:3d11 answers · 443✓ 2606:4700:3031::ac43:cce1 answers · 443 | yes |
| www over IPv6 www.customerschainotc.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3036::6815:3d11 answers · 443✓ 2606:4700:3031::ac43:cce1 answers · 443 | yes |
| Mail servers (MX) have IPv6 Every mail server has an AAAA record. aspmx.l.google.com ✓alt3.aspmx.l.google.com ✓alt4.aspmx.l.google.com ✓alt1.aspmx.l.google.com ✓alt2.aspmx.l.google.com ✓ | yes |
| Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. laila.ns.cloudflare.com ✓rick.ns.cloudflare.com ✓ | yes |
| HTTPS over IPv6 · not part of the grade yet Redirects to customerschain.com, which has no IPv6 address — so IPv6 visitors end up needing IPv4 after all. https://customerschainotc.com/ via 2606:4700:3036::6815:3d11 → 301https://customerschain.com/ · redirects to customerschain.com, which has no IPv6 address | problem |
customerschainotc.com Has IPv6
| A (IPv4) | 104.21.61.17 172.67.204.225 |
|---|---|
| AAAA (IPv6) | 2606:4700:3036::6815:3d11 2606:4700:3031::ac43:cce1 |
www.customerschainotc.com Has IPv6
| A (IPv4) | 172.67.204.225 104.21.61.17 |
|---|---|
| AAAA (IPv6) | 2606:4700:3036::6815:3d11 2606:4700:3031::ac43:cce1 |
Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).
Permanent link: aaaa.bot/r/ECV_RuQrh3 · How we measure
Checked 2026-11-09 08:59:55 UTC. Full DNS report: dns.pizza/domain/customerschainotc.com · Age, certificate and blocklists: how.is/customerschainotc.com · JSON: /api/v1/customerschainotc.com