Yes — theorematicmachine.com has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 theorematicmachine.com has 4 IPv6 addresses and answers on every one we tested. ✓ 2001:4860:4802:32::15 answers · 443✓ 2001:4860:4802:36::15 answers · 443✓ 2001:4860:4802:34::15 answers · 443✓ 2001:4860:4802:38::15 answers · 443	yes
www over IPv6 www.theorematicmachine.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::ac43:b3b3 answers · 443✓ 2606:4700:3032::6815:4bad answers · 443	yes
Mail servers (MX) have IPv6 No MX records, so mail goes to the domain's own address (implicit MX). It has an AAAA record.	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. keenan.ns.cloudflare.com ✓nora.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 401.

https://theorematicmachine.com/ via 2001:4860:4802:32::15 → 401

works

Nothing keeping you from an A

Nothing to fix
Show it off: add the badge to your README.
[![IPv6](https://aaaa.bot/badge/theorematicmachine.com.svg)](https://aaaa.bot/theorematicmachine.com)

Check again

theorematicmachine.com Has IPv6

A (IPv4)	216.239.36.21 216.239.34.21 216.239.32.21 216.239.38.21
AAAA (IPv6)	2001:4860:4802:32::15 2001:4860:4802:36::15 2001:4860:4802:34::15 2001:4860:4802:38::15

www.theorematicmachine.com Has IPv6

A (IPv4)	172.67.179.179 104.21.75.173
AAAA (IPv6)	2606:4700:3031::ac43:b3b3 2606:4700:3032::6815:4bad

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: theorematicmachine.com
Measured 2026-11-11 21:06:55 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    216.239.36.21, 216.239.34.21, 216.239.32.21, 216.239.38.21
AAAA (IPv6): 2001:4860:4802:32::15, 2001:4860:4802:36::15, 2001:4860:4802:34::15, 2001:4860:4802:38::15
www AAAA:    2606:4700:3031::ac43:b3b3, 2606:4700:3032::6815:4bad

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: theorematicmachine.com has 4 IPv6 addresses and answers on every one we tested.
    2001:4860:4802:32::15: answers (TCP 443)
    2001:4860:4802:36::15: answers (TCP 443)
    2001:4860:4802:34::15: answers (TCP 443)
    2001:4860:4802:38::15: answers (TCP 443)
- www over IPv6: www.theorematicmachine.com has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3031::ac43:b3b3: answers (TCP 443)
    2606:4700:3032::6815:4bad: answers (TCP 443)
- Mail servers (MX) have IPv6: No MX records, so mail goes to the domain's own address (implicit MX). It 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): Loads over IPv6 with a valid certificate: HTTP 401.
    https://theorematicmachine.com/ via 2001:4860:4802:32::15 -> HTTP 401, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/wIoe5QWR4Q

Permanent link: aaaa.bot/r/wIoe5QWR4Q · How we measure

Checked 2026-11-11 21:06:55 UTC. Full DNS report: dns.pizza/domain/theorematicmachine.com · Age, certificate and blocklists: how.is/theorematicmachine.com · JSON: /api/v1/theorematicmachine.com