Has an IPv4 address but no IPv6 (AAAA) record. IPv6-only visitors can't reach it directly.
This is a saved measurement from 2026-11-15 17:52 UTC. Check london.ac.uk live now
| Website over IPv6 london.ac.uk has no AAAA record. | no |
| www over IPv6 www.london.ac.uk has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:10::6814:2556 answers · 443✓ 2606:4700:10::ac42:9057 answers · 443 | yes |
| Mail servers (MX) have IPv6 Every mail server has an AAAA record. london-ac-uk.mail.protection.outlook.com ✓ | yes |
| Nameservers have IPv6 1 of 3 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. ns2.ja.net ✓ns1.ulcc.ac.uk ✗ns0.ulcc.ac.uk ✗ | yes |
london.ac.uk IPv4 only
| A (IPv4) | 51.132.32.57 |
|---|---|
| AAAA (IPv6) | none |
www.london.ac.uk Has IPv6
| Alias of | www.london.ac.uk.cdn.cloudflare.net |
|---|---|
| A (IPv4) | 104.20.37.86 172.66.144.87 |
| AAAA (IPv6) | 2606:4700:10::6814:2556 2606:4700:10::ac42:9057 |
Visitors on IPv6-only networks (many mobile carriers) can still reach it, but only through a translator their carrier runs (NAT64). The site itself has no IPv6 address — and you can't make one up from the IPv4. Why some hosts don't offer it
Permanent link: aaaa.bot/r/Cj1y9M95yB · How we measure
Checked 2026-11-15 17:52:35 UTC. Full DNS report: dns.pizza/domain/london.ac.uk · Age, certificate and blocklists: how.is/london.ac.uk · JSON: /api/v1/london.ac.uk