Yes — asktk.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 asktk.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3035::6815:39fe answers · 443✓ 2606:4700:3031::ac43:c44a 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. eva.ns.cloudflare.com ✓rohin.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://asktk.app/ via 2606:4700:3035::6815:39fe → 302https://sweet-sound-65fe.cloudflareaccess.com/cdn-cgi/access/login/asktk.app?kid=9cd770d85d4fac92e8b8643773160f3ed7964ea26ba00987c73f8f538fd5cd6e&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.VcsXAfWZwJD7mkmQAkiGuNqTZ5aIh4i5kn6704-pEosZxWC3YOHQf56fsZdzjdLwFCWn_SI8xHR_m0pB2QclM5j908wtVsyQDAiFQ6jFFAm24OYOpEjg0r_2FnSvGErQ8RyFKto5uVyAS9SjuWWHcqVtXJs90SgS4n9mQ5eRRH3jkZVRjqwIHAKMhgmoFdl0WH7LJ3LM0SKceZsmCRUiErJrmT7yDFpN9UZCbXdkP8ARjfzNa5no2jSSURRzQXy4-Jf9Rle2FA_I6MXW37SSvw3REhieqN0-wLuKLOt5ej7Meeho44GxJJTNHH8muD8OZDFiuKfPaqV2HLGkgy4s7w&redirect_url=%2F via 2606:4700:300a::6813:c31d → 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/asktk.app.svg)](https://aaaa.bot/asktk.app)

Check again

asktk.app Has IPv6

A (IPv4)	172.67.196.74 104.21.57.254
AAAA (IPv6)	2606:4700:3035::6815:39fe 2606:4700:3031::ac43:c44a

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: asktk.app
Measured 2026-11-10 08:48:04 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.196.74, 104.21.57.254
AAAA (IPv6): 2606:4700:3035::6815:39fe, 2606:4700:3031::ac43:c44a

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: asktk.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3035::6815:39fe: answers (TCP 443)
    2606:4700:3031::ac43:c44a: 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://asktk.app/ via 2606:4700:3035::6815:39fe -> HTTP 302, certificate: valid
    https://sweet-sound-65fe.cloudflareaccess.com/cdn-cgi/access/login/asktk.app?kid=9cd770d85d4fac92e8b8643773160f3ed7964ea26ba00987c73f8f538fd5cd6e&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.VcsXAfWZwJD7mkmQAkiGuNqTZ5aIh4i5kn6704-pEosZxWC3YOHQf56fsZdzjdLwFCWn_SI8xHR_m0pB2QclM5j908wtVsyQDAiFQ6jFFAm24OYOpEjg0r_2FnSvGErQ8RyFKto5uVyAS9SjuWWHcqVtXJs90SgS4n9mQ5eRRH3jkZVRjqwIHAKMhgmoFdl0WH7LJ3LM0SKceZsmCRUiErJrmT7yDFpN9UZCbXdkP8ARjfzNa5no2jSSURRzQXy4-Jf9Rle2FA_I6MXW37SSvw3REhieqN0-wLuKLOt5ej7Meeho44GxJJTNHH8muD8OZDFiuKfPaqV2HLGkgy4s7w&redirect_url=%2F via 2606:4700:300a::6813:c31d -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/9mSKUVEmzg

Permanent link: aaaa.bot/r/9mSKUVEmzg · How we measure

Checked 2026-11-10 08:48:04 UTC. Full DNS report: dns.pizza/domain/asktk.app · Age, certificate and blocklists: how.is/asktk.app · JSON: /api/v1/asktk.app