Yes — kernie.app has IPv6.

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

This is a saved measurement from 2026-11-05 22:35 UTC. Check kernie.app live now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 kernie.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::6815:263c answers · 443✓ 2606:4700:3030::ac43:db8d answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. route3.mx.cloudflare.net ✓route1.mx.cloudflare.net ✓route2.mx.cloudflare.net ✓	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. fred.ns.cloudflare.com ✓meiling.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://kernie.app/ via 2606:4700:3031::6815:263c → 302https://withered-sound-3cde.cloudflareaccess.com/cdn-cgi/access/login/kernie.app?kid=348bbaeb1fc4991993d7ded21922ddea007a81dddbc30de5fe8bc3cb411706e8&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.q7pZmIpzAxNI7r-ZcdZadoddlAOH49NVm8wmwoFJQbFRxx5zBQwMQBF3jgGvUhBuzS9oO6MBj8Ey98f0aan4ZV2c4WFGnxG9wGat6osCqZwVCRuwlctBLfsRSPxXDfD2hnRs5eYMaVvtXSfIr39GZBruP2_W03mZeUrlPY6cj6_4j4e5fyOIrhZMuw8K2rvMwEEzJlVLwCufh4_Ptk7r7lT21gjAlOIxx5YXWMa-rEuKYTEmOa5EAr1aubwkbJAYzYS9JCvuH-ZKhVTwDmJYggzVNQfuWnMaBKbISa8bXCnrxFOskp5tadzgdiO3G4rbaiugdjH_B5vfshtuizzqjw&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/kernie.app.svg)](https://aaaa.bot/kernie.app)

Check again

kernie.app Has IPv6

A (IPv4)	172.67.219.141 104.21.38.60
AAAA (IPv6)	2606:4700:3031::6815:263c 2606:4700:3030::ac43:db8d

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: kernie.app
Measured 2026-11-05 22:35:48 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.219.141, 104.21.38.60
AAAA (IPv6): 2606:4700:3031::6815:263c, 2606:4700:3030::ac43:db8d

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: kernie.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3031::6815:263c: answers (TCP 443)
    2606:4700:3030::ac43:db8d: 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://kernie.app/ via 2606:4700:3031::6815:263c -> HTTP 302, certificate: valid
    https://withered-sound-3cde.cloudflareaccess.com/cdn-cgi/access/login/kernie.app?kid=348bbaeb1fc4991993d7ded21922ddea007a81dddbc30de5fe8bc3cb411706e8&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.q7pZmIpzAxNI7r-ZcdZadoddlAOH49NVm8wmwoFJQbFRxx5zBQwMQBF3jgGvUhBuzS9oO6MBj8Ey98f0aan4ZV2c4WFGnxG9wGat6osCqZwVCRuwlctBLfsRSPxXDfD2hnRs5eYMaVvtXSfIr39GZBruP2_W03mZeUrlPY6cj6_4j4e5fyOIrhZMuw8K2rvMwEEzJlVLwCufh4_Ptk7r7lT21gjAlOIxx5YXWMa-rEuKYTEmOa5EAr1aubwkbJAYzYS9JCvuH-ZKhVTwDmJYggzVNQfuWnMaBKbISa8bXCnrxFOskp5tadzgdiO3G4rbaiugdjH_B5vfshtuizzqjw&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/JWVL2qWCza

Permanent link: aaaa.bot/r/JWVL2qWCza · How we measure

Checked 2026-11-05 22:35:48 UTC. Full DNS report: dns.pizza/domain/kernie.app · Age, certificate and blocklists: how.is/kernie.app · JSON: /api/v1/kernie.app