Yes — crestoutlook.org has IPv6.

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

A
IPv6 readiness
Website, mail and DNS all work over IPv6.
Website over IPv6
crestoutlook.org has 4 IPv6 addresses and answers on every one we tested (4 more not tested).
✓ 2600:9000:20ea:4a00:a:5ee1:d280:93a1 answers · 443✓ 2600:9000:20ea:b000:a:5ee1:d280:93a1 answers · 443✓ 2600:9000:20ea:a400:a:5ee1:d280:93a1 answers · 443✓ 2600:9000:20ea:5200:a:5ee1:d280:93a1 answers · 443– 2600:9000:20ea:3200:a:5ee1:d280:93a1 not tested– 2600:9000:20ea:3a00:a:5ee1:d280:93a1 not tested– 2600:9000:20ea:1200:a:5ee1:d280:93a1 not tested– 2600:9000:20ea:6600:a:5ee1:d280:93a1 not tested
yes
www over IPv6
www.crestoutlook.org has 4 IPv6 addresses and answers on every one we tested (4 more not tested).
✓ 2600:9000:20ea:3200:a:5ee1:d280:93a1 answers · 443✓ 2600:9000:20ea:3e00:a:5ee1:d280:93a1 answers · 443✓ 2600:9000:20ea:4000:a:5ee1:d280:93a1 answers · 443✓ 2600:9000:20ea:ba00:a:5ee1:d280:93a1 answers · 443– 2600:9000:20ea:0:a:5ee1:d280:93a1 not tested– 2600:9000:20ea:4e00:a:5ee1:d280:93a1 not tested– 2600:9000:20ea:6e00:a:5ee1:d280:93a1 not tested– 2600:9000:20ea:3800:a:5ee1:d280:93a1 not tested
yes
Mail servers (MX) have IPv6
Every mail server has an AAAA record.
smtp.google.com ✓
yes
Nameservers have IPv6
4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
ns-1526.awsdns-62.org ✓ns-1648.awsdns-14.co.uk ✓ns-6.awsdns-00.com ✓ns-671.awsdns-19.net ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 404.
https://crestoutlook.org/ via 2600:9000:20ea:4a00:a:5ee1:d280:93a1 → 404
works
 Which outside scripts, fonts, payments or chat crestoutlook.org loads from have no IPv6.
 Load crestoutlook.org over IPv6 from up to six other places — a second opinion.

Nothing keeping you from an A

  1. Nothing to fix
    Show it off: add the badge to your README.
    [![IPv6](https://aaaa.bot/badge/crestoutlook.org.svg)](https://aaaa.bot/crestoutlook.org)

Check again

crestoutlook.org  Has IPv6

A (IPv4)13.35.78.37
13.35.78.106
13.35.78.3
13.35.78.104
AAAA (IPv6)2600:9000:20ea:4a00:a:5ee1:d280:93a1
2600:9000:20ea:b000:a:5ee1:d280:93a1
2600:9000:20ea:a400:a:5ee1:d280:93a1
2600:9000:20ea:5200:a:5ee1:d280:93a1
2600:9000:20ea:3200:a:5ee1:d280:93a1
2600:9000:20ea:3a00:a:5ee1:d280:93a1
2600:9000:20ea:1200:a:5ee1:d280:93a1
2600:9000:20ea:6600:a:5ee1:d280:93a1

www.crestoutlook.org  Has IPv6

A (IPv4)13.35.78.106
13.35.78.3
13.35.78.37
13.35.78.104
AAAA (IPv6)2600:9000:20ea:3200:a:5ee1:d280:93a1
2600:9000:20ea:3e00:a:5ee1:d280:93a1
2600:9000:20ea:4000:a:5ee1:d280:93a1
2600:9000:20ea:ba00:a:5ee1:d280:93a1
2600:9000:20ea:0:a:5ee1:d280:93a1
2600:9000:20ea:4e00:a:5ee1:d280:93a1
2600:9000:20ea:6e00:a:5ee1:d280:93a1
2600:9000:20ea:3800:a:5ee1:d280:93a1

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/G5Rjz9hrvq · How we measure

Checked 2026-11-07 23:24:17 UTC. Full DNS report: dns.pizza/domain/crestoutlook.org · Age, certificate and blocklists: how.is/crestoutlook.org · JSON: /api/v1/crestoutlook.org