No — brown.edu is IPv4 only.

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

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 brown.edu now

D
IPv6 readiness
The website has no IPv6.
Website over IPv6
brown.edu has no AAAA record.		no
www over IPv6
www.brown.edu has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700::6812:3ad answers · 443✓ 2606:4700::6812:2ad answers · 443
yes
Mail servers (MX) have IPv6
Every mail server has an AAAA record.
alt4.aspmx.l.google.com ✓alt3.aspmx.l.google.com ✓alt2.aspmx.l.google.com ✓alt1.aspmx.l.google.com ✓aspmx.l.google.com ✓
yes
Nameservers have IPv6
1 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
bru-ns1.brown.edu ✗bru-ns2.brown.edu ✗ns1.ucsb.edu ✓bru-ns3.brown.edu ✗
yes

First measured 2026-11-02; last confirmed 2026-11-02.

What's keeping brown.edu from an A

  1. Give brown.edu an IPv6 address
    Ask your hosting provider for the site's IPv6 address (or the hostname to point at), then publish it as an AAAA record. If your host doesn't offer IPv6, a proxy that does can sit in front. How to add an AAAA record

Check again

brown.edu  IPv4 only

A (IPv4)128.148.252.217
AAAA (IPv6)none

www.brown.edu  Has IPv6

Alias ofwww.brown.edu.cdn.cloudflare.net
A (IPv4)104.18.3.173
104.18.2.173
AAAA (IPv6)2606:4700::6812:3ad
2606:4700::6812:2ad

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/N34Gucjobu · How we measure

Checked 2026-11-02 16:56:34 UTC. Full DNS report: dns.pizza/domain/brown.edu · Age, certificate and blocklists: how.is/brown.edu · JSON: /api/v1/brown.edu