Yes — etks.dev 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
etks.dev has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3037::ac43:a1c0 answers · 443✓ 2606:4700:3031::6815:f3d answers · 443
yes
www over IPv6
www.etks.dev has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3031::6815:f3d answers · 443✓ 2606:4700:3037::ac43:a1c0 answers · 443
yes
Mail servers (MX) have IPv6
None of the mail servers has an AAAA record.
mx00.ionos.es ✗mx01.ionos.es ✗
no
Nameservers have IPv6
2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
dale.ns.cloudflare.com ✓sunny.ns.cloudflare.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.
https://etks.dev/ via 2606:4700:3037::ac43:a1c0 → 301https://escapethekillswitch.com/ via 2606:4700:3034::6815:2f1a → 200
works
 Load etks.dev over IPv6 from up to six other places — a second opinion.

What's keeping etks.dev from an A

  1. Mail servers without IPv6
    mx00.ionos.es, mx01.ionos.es 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

etks.dev  Has IPv6

A (IPv4)104.21.15.61
172.67.161.192
AAAA (IPv6)2606:4700:3037::ac43:a1c0
2606:4700:3031::6815:f3d

www.etks.dev  Has IPv6

A (IPv4)172.67.161.192
104.21.15.61
AAAA (IPv6)2606:4700:3031::6815:f3d
2606:4700:3037::ac43:a1c0

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/SZpmFi49oA · How we measure

Checked 2026-11-05 12:53:45 UTC. Full DNS report: dns.pizza/domain/etks.dev · Age, certificate and blocklists: how.is/etks.dev · JSON: /api/v1/etks.dev