Has both IPv4 (A) and IPv6 (AAAA) addresses.
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 iu.edu now
| Website over IPv6 iu.edu has 2 IPv6 addresses and answers on every one we tested. ✓ 2001:18e8:2:e::11d answers · 443✓ 2001:18e8:2:e::11e answers · 443 | yes |
| www over IPv6 www.iu.edu has 2 IPv6 addresses and answers on every one we tested. ✓ 2001:18e8:2:e::11e answers · 443✓ 2001:18e8:2:e::11d answers · 443 | yes |
| Mail servers (MX) have IPv6 Every mail server has an AAAA record. iu-edu.mail.protection.outlook.com ✓ | yes |
| Nameservers have IPv6 2 of 3 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. dns1.iu.edu ✓dns2.iu.edu ✓dns3.iu.edu ✗ | yes |
First measured 2026-11-02; last confirmed 2026-11-02.
| HTTPS over IPv6 · not part of the grade yet Loads over IPv6 with a valid certificate: HTTP 200. https://iu.edu/ via 2001:18e8:2:e::11d → 200 | works |
iu.edu Has IPv6
| A (IPv4) | 129.79.123.142 129.79.123.143 |
|---|---|
| AAAA (IPv6) | 2001:18e8:2:e::11d 2001:18e8:2:e::11e |
www.iu.edu Has IPv6
| Alias of | iu.edu |
|---|---|
| A (IPv4) | 129.79.123.143 129.79.123.142 |
| AAAA (IPv6) | 2001:18e8:2:e::11e 2001:18e8:2:e::11d |
Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).
Permanent link: aaaa.bot/r/tU4jTZyb3N · How we measure
Checked 2026-11-02 16:56:41 UTC. Full DNS report: dns.pizza/domain/iu.edu · Age, certificate and blocklists: how.is/iu.edu · JSON: /api/v1/iu.edu