Yes — calendar.usc.edu has IPv6.

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

This is a saved measurement from 2026-11-03 04:03 UTC. Check calendar.usc.edu live now

B
IPv6 readiness
Works over IPv6, with one gap: www doesn't fully work over IPv6.
Website over IPv6
calendar.usc.edu has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700::6812:d2e answers · 443✓ 2606:4700::6812:c2e answers · 443
yes
www over IPv6
www.calendar.usc.edu has no AAAA record.		no
Mail servers (MX) have IPv6
No MX records, so mail goes to the domain's own address (implicit MX). It has an AAAA record.		yes
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://calendar.usc.edu/ via 2606:4700::6812:d2e → 200
works

What's keeping calendar.usc.edu from an A

  1. Add IPv6 for www.calendar.usc.edu
    www.calendar.usc.edu has no AAAA record. Get www's IPv6 address from whoever hosts www and add it as an AAAA record. If the same server already serves both names (and its certificate covers www), you can reuse calendar.usc.edu's AAAA record(s) for www. How to add an AAAA record

Check again

calendar.usc.edu  Has IPv6

A (IPv4)104.18.13.46
104.18.12.46
AAAA (IPv6)2606:4700::6812:d2e
2606:4700::6812:c2e

www.calendar.usc.edu  No address

A (IPv4)none
AAAA (IPv6)none

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/KunOsym8Qi · How we measure

Checked 2026-11-03 04:03:33 UTC. Full DNS report: dns.pizza/domain/calendar.usc.edu · Age, certificate and blocklists: how.is/calendar.usc.edu · JSON: /api/v1/calendar.usc.edu