Has an IPv4 address but no IPv6 (AAAA) record. IPv6-only visitors can't reach it directly.
Measured 2026-11-02 16:56 UTC. We reuse a result for up to a week, so we aren't testing the same site over and over. Check ou.edu now
| Website over IPv6 ou.edu has no AAAA record. | no |
| www over IPv6 www.ou.edu has no AAAA record. | no |
| Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. mxa-00272701.gslb.pphosted.com ✗mxb-00272701.gslb.pphosted.com ✗ | no |
| Nameservers have IPv6 4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. ns-1284.awsdns-32.org ✓ns-1598.awsdns-07.co.uk ✓ns-472.awsdns-59.com ✓ns-937.awsdns-53.net ✓ | yes |
First measured 2026-11-02; last confirmed 2026-11-02.
ou.edu IPv4 only
| A (IPv4) | 156.110.247.18 |
|---|---|
| AAAA (IPv6) | none |
www.ou.edu IPv4 only
| A (IPv4) | 156.110.247.18 |
|---|---|
| AAAA (IPv6) | none |
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/aYZF3E_j1S · How we measure
Checked 2026-11-02 16:56:40 UTC. Full DNS report: dns.pizza/domain/ou.edu · Age, certificate and blocklists: how.is/ou.edu · JSON: /api/v1/ou.edu