Yes — tethers.tech 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
tethers.tech has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3030::6815:dc4 answers · 443✓ 2606:4700:3032::ac43:9d4f answers · 443
yes
www over IPv6
www.tethers.tech has 2 IPv6 addresses and answers on every one we tested.
✓ 2606:4700:3032::ac43:9d4f answers · 443✓ 2606:4700:3030::6815:dc4 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.
coco.ns.cloudflare.com ✓frank.ns.cloudflare.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 200.
https://tethers.tech/ via 2606:4700:3030::6815:dc4 → 200
works
 Load tethers.tech over IPv6 from up to six other places — a second opinion.

What's keeping tethers.tech from an A

  1. 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

tethers.tech  Has IPv6

A (IPv4)172.67.157.79
104.21.13.196
AAAA (IPv6)2606:4700:3030::6815:dc4
2606:4700:3032::ac43:9d4f

www.tethers.tech  Has IPv6

A (IPv4)104.21.13.196
172.67.157.79
AAAA (IPv6)2606:4700:3032::ac43:9d4f
2606:4700:3030::6815:dc4

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/Rvz_189GOV · How we measure

Checked 2026-10-31 08:53:42 UTC. Full DNS report: dns.pizza/domain/tethers.tech · JSON: /api/v1/tethers.tech