Yes — usc.edu has IPv6.

Has both IPv4 (A) and IPv6 (AAAA) addresses.

This is a saved measurement from 2026-11-02 16:56 UTC. Check usc.edu live now

B
IPv6 readiness
Works over IPv6, with one gap: its mail servers lack IPv6.
Website over IPv6
usc.edu has 2 IPv6 addresses and answers on every one we tested.
✓ 2620:12a:8000::3 answers · 443✓ 2620:12a:8001::3 answers · 443
yes
www over IPv6
www.usc.edu has 2 IPv6 addresses and answers on every one we tested.
✓ 2620:12a:8001::3 answers · 443✓ 2620:12a:8000::3 answers · 443
yes
Mail servers (MX) have IPv6
None of the mail servers has an AAAA record.
mx0a-00164701.pphosted.com ✗mx0b-00164701.pphosted.com ✗
no
Nameservers have IPv6
2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
ns0163.secondary.cloudflare.com ✓ns0037.secondary.cloudflare.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 200.
https://usc.edu/ via 2620:12a:8000::3 → 200
works

What's keeping usc.edu from an A

  1. Mail servers without IPv6
    mx0a-00164701.pphosted.com, mx0b-00164701.pphosted.com have no AAAA record, so mail from IPv6-only servers can't reach them directly. If a provider runs your mail, that's their setting; if you run it, add AAAA records for these hosts.

Check again

usc.edu  Has IPv6

A (IPv4)23.185.0.3
AAAA (IPv6)2620:12a:8000::3
2620:12a:8001::3

www.usc.edu  Has IPv6

A (IPv4)23.185.0.3
AAAA (IPv6)2620:12a:8001::3
2620:12a:8000::3

Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).

Copy the evidence — a citation-ready record of this measurement

 Permanent link: aaaa.bot/r/dfzcmkfrae · How we measure

Checked 2026-11-02 16:56:42 UTC. Full DNS report: dns.pizza/domain/usc.edu · Age, certificate and blocklists: how.is/usc.edu · JSON: /api/v1/usc.edu