Yes — crysa.xyz has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 crysa.xyz has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::ac43:d054 answers · 443✓ 2606:4700:3037::6815:3520 answers · 443	yes
www over IPv6 www.crysa.xyz has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::6815:3520 answers · 443✓ 2606:4700:3031::ac43:d054 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. bjorn.ns.cloudflare.com ✓ollie.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://crysa.xyz/ via 2606:4700:3031::ac43:d054 → 302https://jolly-heart-68ac.cloudflareaccess.com/cdn-cgi/access/login/crysa.xyz?kid=fb4c434110a83f07522dae7f519a17be182ce9877f9e05fd51179fe52b2dac69&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.o5Y-EVOqTBCeNL3W4nL_k-JnIiZnwvbsF6lv0cwqxsHmS_mMurMHQFtJvEuatg_4XHa76OTOfE_9IcsjpRPIeYrtmCyd-1vJMB-8I9ZqhSBDPVFDL9f4tkqLvSpxI8o9tkpvZuJjKNDF0ZG1ObA0qk80YWqWYTzrW9Q3CIAjK1esAOxFJyRNOhAoy8SEFKFgUohzkgC3ueAIhvG1xld1XKlUv80aY0Z8TFIksWqnXc_TUYZDDZlWdLWSgHDwJo_uXmRg-5spDXtQBD7vaVEagMEQIk3qv8d1An6YKyF1Ll69l-TcAHD_fWzE19_lE5eHAkQoyNpJXHduyobvWTyYTg&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/crysa.xyz.svg)](https://aaaa.bot/crysa.xyz)

Check again

crysa.xyz Has IPv6

A (IPv4)	104.21.53.32 172.67.208.84
AAAA (IPv6)	2606:4700:3031::ac43:d054 2606:4700:3037::6815:3520

www.crysa.xyz Has IPv6

A (IPv4)	172.67.208.84 104.21.53.32
AAAA (IPv6)	2606:4700:3037::6815:3520 2606:4700:3031::ac43:d054

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: crysa.xyz
Measured 2026-11-04 15:45:05 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.53.32, 172.67.208.84
AAAA (IPv6): 2606:4700:3031::ac43:d054, 2606:4700:3037::6815:3520
www AAAA:    2606:4700:3037::6815:3520, 2606:4700:3031::ac43:d054

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: crysa.xyz has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3031::ac43:d054: answers (TCP 443)
    2606:4700:3037::6815:3520: answers (TCP 443)
- www over IPv6: www.crysa.xyz has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3037::6815:3520: answers (TCP 443)
    2606:4700:3031::ac43:d054: 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 after 1 redirect: HTTP 200.
    https://crysa.xyz/ via 2606:4700:3031::ac43:d054 -> HTTP 302, certificate: valid
    https://jolly-heart-68ac.cloudflareaccess.com/cdn-cgi/access/login/crysa.xyz?kid=fb4c434110a83f07522dae7f519a17be182ce9877f9e05fd51179fe52b2dac69&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.o5Y-EVOqTBCeNL3W4nL_k-JnIiZnwvbsF6lv0cwqxsHmS_mMurMHQFtJvEuatg_4XHa76OTOfE_9IcsjpRPIeYrtmCyd-1vJMB-8I9ZqhSBDPVFDL9f4tkqLvSpxI8o9tkpvZuJjKNDF0ZG1ObA0qk80YWqWYTzrW9Q3CIAjK1esAOxFJyRNOhAoy8SEFKFgUohzkgC3ueAIhvG1xld1XKlUv80aY0Z8TFIksWqnXc_TUYZDDZlWdLWSgHDwJo_uXmRg-5spDXtQBD7vaVEagMEQIk3qv8d1An6YKyF1Ll69l-TcAHD_fWzE19_lE5eHAkQoyNpJXHduyobvWTyYTg&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/68kxF35oYR

Permanent link: aaaa.bot/r/68kxF35oYR · How we measure

Checked 2026-11-04 15:45:05 UTC. Full DNS report: dns.pizza/domain/crysa.xyz · Age, certificate and blocklists: how.is/crysa.xyz · JSON: /api/v1/crysa.xyz