Yes — adsrvr.org has IPv6.

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

B
IPv6 readiness
Works over IPv6, with one gap: its mail servers lack IPv6.
Website over IPv6
adsrvr.org has 4 IPv6 addresses and answers on every one we tested (4 more not tested).
✓ 2600:9000:2870:5000:12:e08a:be80:93a1 answers · 443✓ 2600:9000:2870:d200:12:e08a:be80:93a1 answers · 443✓ 2600:9000:2870:3600:12:e08a:be80:93a1 answers · 443✓ 2600:9000:2870:7e00:12:e08a:be80:93a1 answers · 443– 2600:9000:2870:ec00:12:e08a:be80:93a1 not tested– 2600:9000:2870:4800:12:e08a:be80:93a1 not tested– 2600:9000:2870:9e00:12:e08a:be80:93a1 not tested– 2600:9000:2870:b400:12:e08a:be80:93a1 not tested
yes
www over IPv6
www.adsrvr.org has 4 IPv6 addresses and answers on every one we tested (4 more not tested).
✓ 2600:9000:2870:9e00:12:e08a:be80:93a1 answers · 443✓ 2600:9000:2870:8600:12:e08a:be80:93a1 answers · 443✓ 2600:9000:2870:5e00:12:e08a:be80:93a1 answers · 443✓ 2600:9000:2870:3000:12:e08a:be80:93a1 answers · 443– 2600:9000:2870:e000:12:e08a:be80:93a1 not tested– 2600:9000:2870:6800:12:e08a:be80:93a1 not tested– 2600:9000:2870:e400:12:e08a:be80:93a1 not tested– 2600:9000:2870:dc00:12:e08a:be80:93a1 not tested
yes
Mail servers (MX) have IPv6
None of the mail servers has an AAAA record.
smtp.secureserver.net ✗mailstore1.secureserver.net ✗
no
Nameservers have IPv6
4 of 8 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
dns1.p08.nsone.net ✓dns2.p08.nsone.net ✓dns3.p08.nsone.net ✓dns4.p08.nsone.net ✓ns01.ttddnnss.com ✗ns02.ttddnnss.com ✗ns03.ttddnnss.com ✗ns04.ttddnnss.com ✗
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 200.
https://adsrvr.org/ via 2600:9000:2870:5000:12:e08a:be80:93a1 → 200
works
 Load adsrvr.org over IPv6 from up to six other places — a second opinion.

What's keeping adsrvr.org from an A

  1. Mail servers without IPv6
    smtp.secureserver.net, mailstore1.secureserver.net 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

adsrvr.org  Has IPv6

A (IPv4)3.170.42.56
3.170.42.67
3.170.42.50
3.170.42.3
AAAA (IPv6)2600:9000:2870:5000:12:e08a:be80:93a1
2600:9000:2870:d200:12:e08a:be80:93a1
2600:9000:2870:3600:12:e08a:be80:93a1
2600:9000:2870:7e00:12:e08a:be80:93a1
2600:9000:2870:ec00:12:e08a:be80:93a1
2600:9000:2870:4800:12:e08a:be80:93a1
2600:9000:2870:9e00:12:e08a:be80:93a1
2600:9000:2870:b400:12:e08a:be80:93a1

www.adsrvr.org  Has IPv6

Alias ofd2bd48osy0szju.cloudfront.net
A (IPv4)3.170.42.56
3.170.42.3
3.170.42.67
3.170.42.50
AAAA (IPv6)2600:9000:2870:9e00:12:e08a:be80:93a1
2600:9000:2870:8600:12:e08a:be80:93a1
2600:9000:2870:5e00:12:e08a:be80:93a1
2600:9000:2870:3000:12:e08a:be80:93a1
2600:9000:2870:e000:12:e08a:be80:93a1
2600:9000:2870:6800:12:e08a:be80:93a1
2600:9000:2870:e400:12:e08a:be80:93a1
2600:9000:2870:dc00:12:e08a:be80:93a1

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/TLF2_xw3kr · How we measure

Checked 2026-10-31 20:46:42 UTC. Full DNS report: dns.pizza/domain/adsrvr.org · JSON: /api/v1/adsrvr.org