Yes — dev.supply has IPv6.

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

This is a saved measurement from 2026-11-09 08:44 UTC. Check dev.supply live now

B
IPv6 readiness
Works over IPv6, with one gap: its mail servers lack IPv6.
Website over IPv6
dev.supply has an AAAA record and answers on it.
✓ 2620:127:f00f:5:: answers · 443
yes
www over IPv6
www.dev.supply has an AAAA record and answers on it.
✓ 2620:127:f00f:e:: answers · 443
yes
Mail servers (MX) have IPv6
None of the mail servers has an AAAA record.
mx1.spacemail.com ✗mx2.spacemail.com ✗
no
Nameservers have IPv6
2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
launch1.spaceship.net ✓launch2.spaceship.net ✓
yes
HTTPS over IPv6 · not part of the grade yet
dev.supply didn't complete an HTTPS request over IPv6 (ERR_SSL_SSL/TLS_ALERT_HANDSHAKE_FAILURE).
https://dev.supply/ via 2620:127:f00f:5:: · ERR_SSL_SSL/TLS_ALERT_HANDSHAKE_FAILURE
?

What's keeping dev.supply from an A

  1. Mail servers without IPv6
    mx1.spacemail.com, mx2.spacemail.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

dev.supply  Has IPv6

A (IPv4)23.227.38.65
AAAA (IPv6)2620:127:f00f:5::

www.dev.supply  Has IPv6

Alias ofshops.myshopify.com
A (IPv4)23.227.38.74
AAAA (IPv6)2620:127:f00f:e::

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/2Ekige8mLO · How we measure

Checked 2026-11-09 08:44:04 UTC. Full DNS report: dns.pizza/domain/dev.supply · Age, certificate and blocklists: how.is/dev.supply · JSON: /api/v1/dev.supply