Has both IPv4 (A) and IPv6 (AAAA) addresses.
| Website over IPv6 withbarclaysimpsonpro.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3036::ac43:d4df answers · 443✓ 2606:4700:3034::6815:2d63 answers · 443 | yes |
| www over IPv6 www.withbarclaysimpsonpro.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3034::6815:2d63 answers · 443✓ 2606:4700:3036::ac43:d4df 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. erin.ns.cloudflare.com ✓shane.ns.cloudflare.com ✓ | yes |
| HTTPS over IPv6 · not part of the grade yet Loads over IPv6 with a valid certificate: HTTP 404. https://withbarclaysimpsonpro.com/ via 2606:4700:3036::ac43:d4df → 404 | works |
withbarclaysimpsonpro.com Has IPv6
| A (IPv4) | 104.21.45.99 172.67.212.223 |
|---|---|
| AAAA (IPv6) | 2606:4700:3036::ac43:d4df 2606:4700:3034::6815:2d63 |
www.withbarclaysimpsonpro.com Has IPv6
| A (IPv4) | 104.21.45.99 172.67.212.223 |
|---|---|
| AAAA (IPv6) | 2606:4700:3034::6815:2d63 2606:4700:3036::ac43:d4df |
Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).
Permanent link: aaaa.bot/r/1q3ko2sIzL · How we measure
Checked 2026-10-30 20:27:41 UTC. Full DNS report: dns.pizza/domain/withbarclaysimpsonpro.com · JSON: /api/v1/withbarclaysimpsonpro.com