No — cloud.colorado.edu is IPv4 only.

Has an IPv4 address but no IPv6 (AAAA) record. IPv6-only visitors can't reach it directly.

D
IPv6 readiness
The website has no IPv6.
Website over IPv6
cloud.colorado.edu has no AAAA record.		no
Mail servers (MX) have IPv6
Every mail server has an AAAA record.
colorado-edu.mail.protection.outlook.com ✓
yes
Nameservers have IPv6
6 of 6 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
a1-153.akam.net ✓a2-67.akam.net ✓a11-66.akam.net ✓a22-67.akam.net ✓a3-66.akam.net ✓a20-65.akam.net ✓
yes

What's keeping cloud.colorado.edu from an A

  1. cloud.colorado.edu is an alias of server.colorado.edu, which has no IPv6
    cloud.colorado.edu is a CNAME, so it can't also have its own AAAA record. Ask whoever runs server.colorado.edu to enable IPv6 there — or replace the alias with the A and AAAA records they give you. Why some hosts don't offer IPv6

Check again

cloud.colorado.edu  IPv4 only

Alias ofserver.colorado.edu
A (IPv4)128.138.196.22
AAAA (IPv6)none

What this means

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

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

 Permanent link: aaaa.bot/r/z1vKjwAzwx · How we measure

Checked 2026-11-03 07:46:40 UTC. Full DNS report: dns.pizza/domain/cloud.colorado.edu · Age, certificate and blocklists: how.is/cloud.colorado.edu · JSON: /api/v1/cloud.colorado.edu