Yes — architrace.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 architrace.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3035::6815:24e8 answers · 443✓ 2606:4700:3030::ac43:c8cc answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. smtp.google.com ✓	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. martin.ns.cloudflare.com ✓tegan.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://architrace.app/ via 2606:4700:3035::6815:24e8 → 302https://polished-bonus-e9e5.cloudflareaccess.com/cdn-cgi/access/login/architrace.app?kid=039f2383d6b3c472ad755092127db6ecfdf18546a3e80cdaeabb3f5bab318e72&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.RDZfaBT8zTA5MjAHDfoYJDvJMp-L01U-VKdxbZt_sJIwg__p470gOPhrHGaAswj7q_wbejNJ07EvMjWc9aLId7im2Bg8BPImYttHoTTDs-AQEjFaee0B7oRlXRJVVIpuslytOlFNoGQw5xsZRTrv8zsImG8ZR5fcS5sBtf4XT0bYYO8yGsZa0kylQklLJVMhydr6-EQNMWbvRNteXCK30u83s2_ImeIdbIyOk-AoRPCK8lwj8lRKGdHx4QqlkBGakvh2jTzrff1qQ0WUO9ntPeDNkl2egmgKShUSp8tRbcYPR0BP6rPE867y6-IycngQmvAbLh-S7tsBggGkpOnjgw&redirect_url=%2F via 2606:4700:300a::6813:c21d → 200

works

Nothing keeping you from an A

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

Check again

architrace.app Has IPv6

A (IPv4)	104.21.36.232 172.67.200.204
AAAA (IPv6)	2606:4700:3035::6815:24e8 2606:4700:3030::ac43:c8cc

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: architrace.app
Measured 2026-11-06 21:43:33 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.36.232, 172.67.200.204
AAAA (IPv6): 2606:4700:3035::6815:24e8, 2606:4700:3030::ac43:c8cc

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: architrace.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3035::6815:24e8: answers (TCP 443)
    2606:4700:3030::ac43:c8cc: answers (TCP 443)
- Mail servers (MX) have IPv6: Every mail server 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 after 1 redirect: HTTP 200.
    https://architrace.app/ via 2606:4700:3035::6815:24e8 -> HTTP 302, certificate: valid
    https://polished-bonus-e9e5.cloudflareaccess.com/cdn-cgi/access/login/architrace.app?kid=039f2383d6b3c472ad755092127db6ecfdf18546a3e80cdaeabb3f5bab318e72&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.RDZfaBT8zTA5MjAHDfoYJDvJMp-L01U-VKdxbZt_sJIwg__p470gOPhrHGaAswj7q_wbejNJ07EvMjWc9aLId7im2Bg8BPImYttHoTTDs-AQEjFaee0B7oRlXRJVVIpuslytOlFNoGQw5xsZRTrv8zsImG8ZR5fcS5sBtf4XT0bYYO8yGsZa0kylQklLJVMhydr6-EQNMWbvRNteXCK30u83s2_ImeIdbIyOk-AoRPCK8lwj8lRKGdHx4QqlkBGakvh2jTzrff1qQ0WUO9ntPeDNkl2egmgKShUSp8tRbcYPR0BP6rPE867y6-IycngQmvAbLh-S7tsBggGkpOnjgw&redirect_url=%2F via 2606:4700:300a::6813:c21d -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/m_2q1ExwRN

Permanent link: aaaa.bot/r/m_2q1ExwRN · How we measure

Checked 2026-11-06 21:43:33 UTC. Full DNS report: dns.pizza/domain/architrace.app · Age, certificate and blocklists: how.is/architrace.app · JSON: /api/v1/architrace.app