Yes — dis.dog has IPv6.

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

This is a saved measurement from 2026-11-03 04:44 UTC. Check dis.dog live now

IPv6 readiness

Works over IPv6, with one gap: its mail servers lack IPv6.

Website over IPv6 dis.dog has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3036::ac43:947c answers · 443✓ 2606:4700:3037::6815:27ce answers · 443	yes
www over IPv6 www.dis.dog has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3036::ac43:947c answers · 443✓ 2606:4700:3037::6815:27ce answers · 443	yes
Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. receive-euw1.forge.rmta.net ✗	no
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. amy.ns.cloudflare.com ✓javier.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Answered over IPv6 with a server error (HTTP 503) — can't tell whether that's specific to IPv6.

https://dis.dog/ via 2606:4700:3036::ac43:947c → 503

What's keeping dis.dog from an A

Mail servers without IPv6
receive-euw1.forge.rmta.net has no AAAA record, so mail from IPv6-only servers can't reach it directly. If a provider runs your mail, that's their setting; if you run it, add AAAA records for these hosts.

Check again

dis.dog Has IPv6

A (IPv4)	172.67.148.124 104.21.39.206
AAAA (IPv6)	2606:4700:3036::ac43:947c 2606:4700:3037::6815:27ce

www.dis.dog Has IPv6

A (IPv4)	172.67.148.124 104.21.39.206
AAAA (IPv6)	2606:4700:3036::ac43:947c 2606:4700:3037::6815:27ce

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

IPv6 measurement: dis.dog
Measured 2026-11-03 04:44:00 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.148.124, 104.21.39.206
AAAA (IPv6): 2606:4700:3036::ac43:947c, 2606:4700:3037::6815:27ce
www AAAA:    2606:4700:3036::ac43:947c, 2606:4700:3037::6815:27ce

Readiness grade B: Works over IPv6, with one gap: its mail servers lack IPv6.
- Website over IPv6: dis.dog has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3036::ac43:947c: answers (TCP 443)
    2606:4700:3037::6815:27ce: answers (TCP 443)
- www over IPv6: www.dis.dog has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3036::ac43:947c: answers (TCP 443)
    2606:4700:3037::6815:27ce: answers (TCP 443)
- Mail servers (MX) have IPv6: None of the mail servers has an AAAA record.
- Nameservers have IPv6: 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.

Reachability = a TCP connection opened on port 443 (or 80).

HTTPS over IPv6 (not graded): Answered over IPv6 with a server error (HTTP 503) — can't tell whether that's specific to IPv6.
    https://dis.dog/ via 2606:4700:3036::ac43:947c -> HTTP 503, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/dCInOELYtr

Permanent link: aaaa.bot/r/dCInOELYtr · How we measure

Checked 2026-11-03 04:44:00 UTC. Full DNS report: dns.pizza/domain/dis.dog · Age, certificate and blocklists: how.is/dis.dog · JSON: /api/v1/dis.dog