Yes — mailafter.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
mailafter.app has an AAAA record and answers on it.
✓ 2a01:4f8:c015:544d::1 answers · 443
yes
Mail servers (MX) have IPv6
None of the mail servers has an AAAA record.
fwd1.porkbun.com ✗fwd2.porkbun.com ✗
no
Nameservers have IPv6
4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
curitiba.ns.porkbun.com ✓fortaleza.ns.porkbun.com ✓maceio.ns.porkbun.com ✓salvador.ns.porkbun.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 200.
https://mailafter.app/ via 2a01:4f8:c015:544d::1 → 200
works
 Which outside scripts, fonts, payments or chat mailafter.app loads from have no IPv6.
 Load mailafter.app over IPv6 from up to six other places — a second opinion.

What's keeping mailafter.app from an A

  1. Mail servers without IPv6
    fwd1.porkbun.com, fwd2.porkbun.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

mailafter.app  Has IPv6

A (IPv4)2.31.100.30
AAAA (IPv6)2a01:4f8:c015:544d::1

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/H5VpsXCeRZ · How we measure

Checked 2026-11-10 01:50:46 UTC. Full DNS report: dns.pizza/domain/mailafter.app · Age, certificate and blocklists: how.is/mailafter.app · JSON: /api/v1/mailafter.app