IPv6
Measured 2026-11-02 16:56 UTC · aaaa.botWorks over IPv6, with one gap: its mail servers lack IPv6.
usc.edu has 2 IPv6 addresses and answers on every one we tested.
- ✓ usc.edu answers (2 of 2 addresses)
- ✓ www.usc.edu answers (2 of 2)
- ✗ Mail: 0 of 2 servers have IPv6
- ✓ Nameservers: 2 of 2 have IPv6
Details: published addresses and what answered
Loads over IPv6 with a valid certificate: HTTP 200.
| Name | Published address (AAAA) | Answers when we connect |
|---|---|---|
| usc.edu | Published2620:12a:8000::32620:12a:8001::3 | Answers when we connect✓ answers on 443✓ answers on 443 |
| www.usc.edu | Published2620:12a:8001::32620:12a:8000::3 | Answers when we connect✓ answers on 443✓ answers on 443 |
Publishedmx0a-00164701.pphosted.commx0b-00164701.pphosted.com | Answers when we connect✗ no IPv6✗ no IPv6 | |
| Nameservers | Publishedns0163.secondary.cloudflare.comns0037.secondary.cloudflare.com | Answers when we connect✓ has IPv6✓ has IPv6 |
Lineage
Our records: Jan 3, 2009 → Nov 2, 2026Oldest registry snapshot we hold: 2025 · 0 renewals on record. These dates are when our records begin, not when the domain was registered.
DNS provider
- apple.com + dec.com + usc.eduJan 2009 – Oct 2018
- usc.eduNov 2018 – Apr 2024
- CloudflareMay 2024 – Jun 2026
IPv6
- IPv6published, and answeringFirst measured Nov 2026
What changed
- IPv6 first measured: published, and answering on Nov 2, 2026usc.edu has 2 IPv6 addresses. Grade B. Measured by aaaa.bot, 2026-11-02 00:12 UTC. No earlier IPv6 record is held, so this is not a "gained" date.
- DNS moved to Cloudflare between Apr 24, 2024 and May 27, 2024ns5.usc.edu, ns6.usc.edu, vip-ns3.usc.edu, vip-ns4.usc.edu → ns0037.secondary.cloudflare.com, ns0163.secondary.cloudflare.com. Old set last seen in WHOIS on 2024-04-24; new set first seen in WHOIS on 2024-05-27.
- DNS moved to usc.edu between Oct 11, 2018 and Nov 11, 2018ns1.usc.edu, ns2.usc.edu, ns3.usc.edu, nserver.apple.com, uucp-gw-1.pa.dec.com → ns5.usc.edu, ns6.usc.edu, ns7.usc.edu. Old set last seen in WHOIS on 2018-10-11; new set first seen in WHOIS on 2018-11-11.
Solid bar: the stretch we observed that name. Dot: a single sighting. Dotted line: no record between sightings of the same name. Nothing is drawn between different names.
Registrar and renewals: 43 WHOIS/RDAP snapshots, 2025-01-06 to 2025-04-28 (ledger built 2026-09-27). Every renewal
DNS provider, WHOIS snapshots: 622 WHOIS/RDAP snapshots that listed nameservers, 2009-01-03 to 2026-06-12 (who.is archive). Both sources feed one row per provider (hover a bar to see which); a change is placed between the nearest observations on either side, and where the two sources disagree, both are listed under What changed.
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