Yes — athleteindex.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 athleteindex.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3032::6815:2470 answers · 443✓ 2606:4700:3037::ac43:c0d1 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. donald.ns.cloudflare.com ✓yolanda.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://athleteindex.app/ via 2606:4700:3032::6815:2470 → 302https://athleteindex.cloudflareaccess.com/cdn-cgi/access/login/athleteindex.app?kid=fd7f3b98aaa0470e557e323185a70f76b54e502bb2bee4147914a3c71cdcf7e9&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.UXTaeFq6VHBH1rf4CDfbaK81EDjsFG56qL0yAsy2bYr4GHH9y40RvOu8Tyzxib4eAqR27-D4fBJk6DsIRpyavI8Ki2HfaNcWZv_g6b2BBLOX_z2YQicbc_eB3Tj_wZjoRLfYrJhtkGuLNPl3QtVvzprNt8ufwKRSlZsLhRGP_ibLssM2tS-LRikguJMO7K1s6fdZaudWqIcA2Z6FtSMYu31CPBG9pkuWiOsBnf_gcza5Q4KGyBCOooqFBSui8TT5kMdXySQV8jz-adSU7M-THAZrWHKIiCF8YFlTCuXDwtvrkdrxN0IIYPxEsGSDUy-fJAwxfvh714SL1vxl0PjC7g&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/athleteindex.app.svg)](https://aaaa.bot/athleteindex.app)

Check again

athleteindex.app Has IPv6

A (IPv4)	172.67.192.209 104.21.36.112
AAAA (IPv6)	2606:4700:3032::6815:2470 2606:4700:3037::ac43:c0d1

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: athleteindex.app
Measured 2026-11-14 11:23:22 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.192.209, 104.21.36.112
AAAA (IPv6): 2606:4700:3032::6815:2470, 2606:4700:3037::ac43:c0d1

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: athleteindex.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3032::6815:2470: answers (TCP 443)
    2606:4700:3037::ac43:c0d1: 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://athleteindex.app/ via 2606:4700:3032::6815:2470 -> HTTP 302, certificate: valid
    https://athleteindex.cloudflareaccess.com/cdn-cgi/access/login/athleteindex.app?kid=fd7f3b98aaa0470e557e323185a70f76b54e502bb2bee4147914a3c71cdcf7e9&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.UXTaeFq6VHBH1rf4CDfbaK81EDjsFG56qL0yAsy2bYr4GHH9y40RvOu8Tyzxib4eAqR27-D4fBJk6DsIRpyavI8Ki2HfaNcWZv_g6b2BBLOX_z2YQicbc_eB3Tj_wZjoRLfYrJhtkGuLNPl3QtVvzprNt8ufwKRSlZsLhRGP_ibLssM2tS-LRikguJMO7K1s6fdZaudWqIcA2Z6FtSMYu31CPBG9pkuWiOsBnf_gcza5Q4KGyBCOooqFBSui8TT5kMdXySQV8jz-adSU7M-THAZrWHKIiCF8YFlTCuXDwtvrkdrxN0IIYPxEsGSDUy-fJAwxfvh714SL1vxl0PjC7g&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/hB8iHpMPgG

Permanent link: aaaa.bot/r/hB8iHpMPgG · How we measure

Checked 2026-11-14 11:23:22 UTC. Full DNS report: dns.pizza/domain/athleteindex.app · Age, certificate and blocklists: how.is/athleteindex.app · JSON: /api/v1/athleteindex.app