Yes — guitarsessions.app 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
guitarsessions.app has 4 IPv6 addresses and answers on every one we tested (4 more not tested).
✓ 2600:9000:20ea:9400:e:8815:e80:93a1 answers · 443✓ 2600:9000:20ea:2e00:e:8815:e80:93a1 answers · 443✓ 2600:9000:20ea:1600:e:8815:e80:93a1 answers · 443✓ 2600:9000:20ea:4600:e:8815:e80:93a1 answers · 443– 2600:9000:20ea:1800:e:8815:e80:93a1 not tested– 2600:9000:20ea:ba00:e:8815:e80:93a1 not tested– 2600:9000:20ea:f400:e:8815:e80:93a1 not tested– 2600:9000:20ea:7200:e:8815:e80:93a1 not tested
yes
www over IPv6
www.guitarsessions.app has 4 IPv6 addresses and answers on every one we tested (4 more not tested).
✓ 2600:9000:20ea:bc00:e:8815:e80:93a1 answers · 443✓ 2600:9000:20ea:6600:e:8815:e80:93a1 answers · 443✓ 2600:9000:20ea:ec00:e:8815:e80:93a1 answers · 443✓ 2600:9000:20ea:de00:e:8815:e80:93a1 answers · 443– 2600:9000:20ea:5a00:e:8815:e80:93a1 not tested– 2600:9000:20ea:3000:e:8815:e80:93a1 not tested– 2600:9000:20ea:7600:e:8815:e80:93a1 not tested– 2600:9000:20ea:ee00:e:8815:e80:93a1 not tested
yes
Mail servers (MX) have IPv6
None of the mail servers has an AAAA record.
mx01.mail.icloud.com ✗mx02.mail.icloud.com ✗
no
Nameservers have IPv6
4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
ns-1302.awsdns-34.org ✓ns-1923.awsdns-48.co.uk ✓ns-6.awsdns-00.com ✓ns-660.awsdns-18.net ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 200.
https://guitarsessions.app/ via 2600:9000:20ea:9400:e:8815:e80:93a1 → 200
works
 Which outside scripts, fonts, payments or chat guitarsessions.app loads from have no IPv6.
 Load guitarsessions.app over IPv6 from up to six other places — a second opinion.

What's keeping guitarsessions.app from an A

  1. Mail servers without IPv6
    mx01.mail.icloud.com, mx02.mail.icloud.com 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

guitarsessions.app  Has IPv6

A (IPv4)13.35.78.75
13.35.78.123
13.35.78.111
13.35.78.103
AAAA (IPv6)2600:9000:20ea:9400:e:8815:e80:93a1
2600:9000:20ea:2e00:e:8815:e80:93a1
2600:9000:20ea:1600:e:8815:e80:93a1
2600:9000:20ea:4600:e:8815:e80:93a1
2600:9000:20ea:1800:e:8815:e80:93a1
2600:9000:20ea:ba00:e:8815:e80:93a1
2600:9000:20ea:f400:e:8815:e80:93a1
2600:9000:20ea:7200:e:8815:e80:93a1

www.guitarsessions.app  Has IPv6

A (IPv4)13.35.78.123
13.35.78.75
13.35.78.111
13.35.78.103
AAAA (IPv6)2600:9000:20ea:bc00:e:8815:e80:93a1
2600:9000:20ea:6600:e:8815:e80:93a1
2600:9000:20ea:ec00:e:8815:e80:93a1
2600:9000:20ea:de00:e:8815:e80:93a1
2600:9000:20ea:5a00:e:8815:e80:93a1
2600:9000:20ea:3000:e:8815:e80:93a1
2600:9000:20ea:7600:e:8815:e80:93a1
2600:9000:20ea:ee00:e:8815:e80:93a1

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/mg4xyuhfpM · How we measure

Checked 2026-11-11 23:42:27 UTC. Full DNS report: dns.pizza/domain/guitarsessions.app · Age, certificate and blocklists: how.is/guitarsessions.app · JSON: /api/v1/guitarsessions.app