Yes — zsidekick.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 zsidekick.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3030::ac43:c4fa answers · 443✓ 2606:4700:3037::6815:222a answers · 443	yes
www over IPv6 www.zsidekick.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3030::ac43:c4fa answers · 443✓ 2606:4700:3037::6815:222a 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. fiona.ns.cloudflare.com ✓jonah.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://zsidekick.app/ via 2606:4700:3030::ac43:c4fa → 302https://waags.cloudflareaccess.com/cdn-cgi/access/login/zsidekick.app?kid=06a4a64dbafff4ff3ea12524b7c433400b83eb992bd867881f5c4e550c4babf9&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjA1MWE5MDgzMmVhZDY1ZDEzM2QxMTg2MjU2MmI1NTgxMTI2NmExYzA2YWZkZDhlNDA2MzRlY2Y2N2M2OTEwNjQifQ.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.71d-bn3j6jo6YbejkjRw_aRuwpHYsdZZTKJDFr9_14VfNQJBJ9H8nJMRdRAyIOYQyCEB7RFCPXflqBexRZzYNEJ5AX9ee2lrMR2X3J8NVsT_DmOKvUf-5vV1n-p7QUz3KaG2fD07YgpGPjB3j-bO1Z-Or5evhBY9mo6FK6ZL3yQycG1pqNzVRmEUDgIB0Mhkab64VurByuqBdRVVXMVj5XXfXyUOTaoSN0LB3RrB8OR9PEXoST4i5sbbX08WAbbjEsa41JQxGuRK787Q93PTubn7IIOw-0sKJPAg10az4GxFt3phz8fAVLeJTSEY323Bprsb_rkhSuZFABxSK5Cm2w&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/zsidekick.app.svg)](https://aaaa.bot/zsidekick.app)

Check again

zsidekick.app Has IPv6

A (IPv4)	104.21.34.42 172.67.196.250
AAAA (IPv6)	2606:4700:3030::ac43:c4fa 2606:4700:3037::6815:222a

www.zsidekick.app Has IPv6

A (IPv4)	104.21.34.42 172.67.196.250
AAAA (IPv6)	2606:4700:3030::ac43:c4fa 2606:4700:3037::6815:222a

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: zsidekick.app
Measured 2026-10-30 21:30:40 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.34.42, 172.67.196.250
AAAA (IPv6): 2606:4700:3030::ac43:c4fa, 2606:4700:3037::6815:222a
www AAAA:    2606:4700:3030::ac43:c4fa, 2606:4700:3037::6815:222a

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: zsidekick.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3030::ac43:c4fa: answers (TCP 443)
    2606:4700:3037::6815:222a: answers (TCP 443)
- www over IPv6: www.zsidekick.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3030::ac43:c4fa: answers (TCP 443)
    2606:4700:3037::6815:222a: 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://zsidekick.app/ via 2606:4700:3030::ac43:c4fa -> HTTP 302, certificate: valid
    https://waags.cloudflareaccess.com/cdn-cgi/access/login/zsidekick.app?kid=06a4a64dbafff4ff3ea12524b7c433400b83eb992bd867881f5c4e550c4babf9&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjA1MWE5MDgzMmVhZDY1ZDEzM2QxMTg2MjU2MmI1NTgxMTI2NmExYzA2YWZkZDhlNDA2MzRlY2Y2N2M2OTEwNjQifQ.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.71d-bn3j6jo6YbejkjRw_aRuwpHYsdZZTKJDFr9_14VfNQJBJ9H8nJMRdRAyIOYQyCEB7RFCPXflqBexRZzYNEJ5AX9ee2lrMR2X3J8NVsT_DmOKvUf-5vV1n-p7QUz3KaG2fD07YgpGPjB3j-bO1Z-Or5evhBY9mo6FK6ZL3yQycG1pqNzVRmEUDgIB0Mhkab64VurByuqBdRVVXMVj5XXfXyUOTaoSN0LB3RrB8OR9PEXoST4i5sbbX08WAbbjEsa41JQxGuRK787Q93PTubn7IIOw-0sKJPAg10az4GxFt3phz8fAVLeJTSEY323Bprsb_rkhSuZFABxSK5Cm2w&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/0Zvxqe6mZA

Permanent link: aaaa.bot/r/0Zvxqe6mZA · How we measure

Checked 2026-10-30 21:30:40 UTC. Full DNS report: dns.pizza/domain/zsidekick.app · JSON: /api/v1/zsidekick.app