No — college-de-france.fr 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
college-de-france.fr has no AAAA record.		no
www over IPv6
www.college-de-france.fr has an AAAA record and answers on it.
✓ 2400:52e0:1a04::925:1 answers · 443
yes
Mail servers (MX) have IPv6
None of the mail servers has an AAAA record.
mxa.relay.renater.fr ✗mxc.relay.renater.fr ✗mxb.relay.renater.fr ✗mxd.relay.renater.fr ✗
no
Nameservers have IPv6
No nameserver has an AAAA record — an IPv6-only resolver can't reach this domain's DNS.
shiva.jussieu.fr ✗darsonval.college-de-france.fr ✗
no

What's keeping college-de-france.fr from an A

  1. Give college-de-france.fr 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
  2. Mail servers without IPv6
    mxa.relay.renater.fr, mxc.relay.renater.fr, mxb.relay.renater.fr, mxd.relay.renater.fr 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.
  3. Nameservers without IPv6
    shiva.jussieu.fr, darsonval.college-de-france.fr all have no AAAA record, so a resolver that only speaks IPv6 can't look your domain up. Most DNS providers offer IPv6 nameservers; ask yours, or move DNS to one that does.

Check again

college-de-france.fr  IPv4 only

A (IPv4)193.52.22.121
193.52.22.122
AAAA (IPv6)none

www.college-de-france.fr  Has IPv6

Alias ofcollege-de-france.b-cdn.net
A (IPv4)37.19.207.38
AAAA (IPv6)2400:52e0:1a04::925:1

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/RLI7x5oy9s · How we measure

Checked 2026-10-31 23:31:34 UTC. Full DNS report: dns.pizza/domain/college-de-france.fr · JSON: /api/v1/college-de-france.fr