Yes — kennelsentry.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 kennelsentry.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::6815:267e answers · 443✓ 2606:4700:3035::ac43:dea7 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. kallie.ns.cloudflare.com ✓skip.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://kennelsentry.app/ via 2606:4700:3037::6815:267e → 302https://billowing-pine-e876.cloudflareaccess.com/cdn-cgi/access/login/kennelsentry.app?kid=7ca82a08667e41e18dd7b490d058c3abe1598458833dd35ff6dfbb05bbdf9a27&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.Xw9Cyilc36_YnOVbmpEFiVUDJbyS1hNyO1SIBODKF4SoWLNLIDB4yAZ5oGzlYfXbaIqBvS96Bsc-g7sFc8pk3KkTDlhp1sH0Y7Un9fqgrM8uXA5zPNmnOUb6qqKjcBrA0jZne8oBvxTNiKGTrn3xb5KUkuQI09yjXQbpTSPlkJiSIjPFMgl3JJ_hqCamjKeAnhjvhIJwHtmrWPjS7FsXpVm0DVIWjM9vW92_F1DXB4BkfDDeAWzDDv57CeJqKuwsbZQY97xhGxCRbkz7-uv6t0xj3kAlYIE3I_IkMEe3RyTYPNn5Mk6TfMwfFmFoHF4Q8x7YkQlgyAVu2CHMJvsuBw&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/kennelsentry.app.svg)](https://aaaa.bot/kennelsentry.app)

Check again

kennelsentry.app Has IPv6

A (IPv4)	172.67.222.167 104.21.38.126
AAAA (IPv6)	2606:4700:3037::6815:267e 2606:4700:3035::ac43:dea7

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: kennelsentry.app
Measured 2026-11-05 23:25:14 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.222.167, 104.21.38.126
AAAA (IPv6): 2606:4700:3037::6815:267e, 2606:4700:3035::ac43:dea7

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: kennelsentry.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3037::6815:267e: answers (TCP 443)
    2606:4700:3035::ac43:dea7: 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://kennelsentry.app/ via 2606:4700:3037::6815:267e -> HTTP 302, certificate: valid
    https://billowing-pine-e876.cloudflareaccess.com/cdn-cgi/access/login/kennelsentry.app?kid=7ca82a08667e41e18dd7b490d058c3abe1598458833dd35ff6dfbb05bbdf9a27&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.Xw9Cyilc36_YnOVbmpEFiVUDJbyS1hNyO1SIBODKF4SoWLNLIDB4yAZ5oGzlYfXbaIqBvS96Bsc-g7sFc8pk3KkTDlhp1sH0Y7Un9fqgrM8uXA5zPNmnOUb6qqKjcBrA0jZne8oBvxTNiKGTrn3xb5KUkuQI09yjXQbpTSPlkJiSIjPFMgl3JJ_hqCamjKeAnhjvhIJwHtmrWPjS7FsXpVm0DVIWjM9vW92_F1DXB4BkfDDeAWzDDv57CeJqKuwsbZQY97xhGxCRbkz7-uv6t0xj3kAlYIE3I_IkMEe3RyTYPNn5Mk6TfMwfFmFoHF4Q8x7YkQlgyAVu2CHMJvsuBw&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/cOtMBU3JNQ

Permanent link: aaaa.bot/r/cOtMBU3JNQ · How we measure

Checked 2026-11-05 23:25:14 UTC. Full DNS report: dns.pizza/domain/kennelsentry.app · Age, certificate and blocklists: how.is/kennelsentry.app · JSON: /api/v1/kennelsentry.app