Yes — ay.delivery 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
ay.delivery has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3032::ac43:9514 answers · 443✓ 2606:4700:3031::6815:29b1 answers · 443
yes
www over IPv6
www.ay.delivery has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3031::6815:29b1 answers · 443✓ 2606:4700:3032::ac43:9514 answers · 443
yes
Mail servers (MX) have IPv6
None of the mail servers has an AAAA record.
mxa.mailgun.org ✗mxb.mailgun.org ✗
no
Nameservers have IPv6
2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
lauryn.ns.cloudflare.com ✓zahir.ns.cloudflare.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 200.
https://ay.delivery/ via 2606:4700:3032::ac43:9514 → 200
works
 Load ay.delivery over IPv6 from up to six other places — a second opinion.

What's keeping ay.delivery from an A

  1. Mail servers without IPv6
    mxa.mailgun.org, mxb.mailgun.org 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

ay.delivery  Has IPv6

A (IPv4)172.67.149.20
104.21.41.177
AAAA (IPv6)2606:4700:3032::ac43:9514
2606:4700:3031::6815:29b1

www.ay.delivery  Has IPv6

A (IPv4)104.21.41.177
172.67.149.20
AAAA (IPv6)2606:4700:3031::6815:29b1
2606:4700:3032::ac43:9514

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/vEL8xi100m · How we measure

Checked 2026-11-01 16:13:33 UTC. Full DNS report: dns.pizza/domain/ay.delivery · JSON: /api/v1/ay.delivery