Yes — fixmyfin.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 fixmyfin.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::6815:11c1 answers · 443✓ 2606:4700:3030::ac43:b233 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. etienne.ns.cloudflare.com ✓mckinley.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://fixmyfin.app/ via 2606:4700:3031::6815:11c1 → 302https://jplockandkey.cloudflareaccess.com/cdn-cgi/access/login/fixmyfin.app?kid=7a10469923d7c1aa1f2ba45608a9f1ea0a345daf3e9b17e72e4057f307f19ae8&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjRhNGRhODE2ZTNkMTY1MjRhNDgyZmUwOWI5MDYxYTA2MDFiYzM0ZDNjYzgyYzBlYmIwMTc3OGMxNTI0YmE4NjcifQ.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.I3dRV5UTMoq_uBjJpQbIvDgxePoJm8zP-w3-vvyyubQ3MgD5Tb-9cim0QkqcOp7dXaXmZ57YuBBpf93LhHJ0hJfOawyZm4CS7WcebI0w_ChJw0pKyPyAMkPTnVwEup0_XpLOqWFglas5EGOmVe2rKv60YgfJntu-1vDxflmDMeBTgHZTegTP3P9Tk7VeD-k7HvLwVw7Gq4NwWJduAADMP4pXJO3ealYBGMo2qOpaCnsyBzpc36HilaDHibgpVKZhjxbtNJOyvbGj5w4oqFPWY4cGuVbSrQUm7eh_hiSDqOqoHYQ2P3-OnyYcNuBu8Js6by_pOldDkVAGy0KrAgVTmQ&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/fixmyfin.app.svg)](https://aaaa.bot/fixmyfin.app)

Check again

fixmyfin.app Has IPv6

A (IPv4)	172.67.178.51 104.21.17.193
AAAA (IPv6)	2606:4700:3031::6815:11c1 2606:4700:3030::ac43:b233

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: fixmyfin.app
Measured 2026-10-31 22:28:41 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.178.51, 104.21.17.193
AAAA (IPv6): 2606:4700:3031::6815:11c1, 2606:4700:3030::ac43:b233

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: fixmyfin.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3031::6815:11c1: answers (TCP 443)
    2606:4700:3030::ac43:b233: 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://fixmyfin.app/ via 2606:4700:3031::6815:11c1 -> HTTP 302, certificate: valid
    https://jplockandkey.cloudflareaccess.com/cdn-cgi/access/login/fixmyfin.app?kid=7a10469923d7c1aa1f2ba45608a9f1ea0a345daf3e9b17e72e4057f307f19ae8&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjRhNGRhODE2ZTNkMTY1MjRhNDgyZmUwOWI5MDYxYTA2MDFiYzM0ZDNjYzgyYzBlYmIwMTc3OGMxNTI0YmE4NjcifQ.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.I3dRV5UTMoq_uBjJpQbIvDgxePoJm8zP-w3-vvyyubQ3MgD5Tb-9cim0QkqcOp7dXaXmZ57YuBBpf93LhHJ0hJfOawyZm4CS7WcebI0w_ChJw0pKyPyAMkPTnVwEup0_XpLOqWFglas5EGOmVe2rKv60YgfJntu-1vDxflmDMeBTgHZTegTP3P9Tk7VeD-k7HvLwVw7Gq4NwWJduAADMP4pXJO3ealYBGMo2qOpaCnsyBzpc36HilaDHibgpVKZhjxbtNJOyvbGj5w4oqFPWY4cGuVbSrQUm7eh_hiSDqOqoHYQ2P3-OnyYcNuBu8Js6by_pOldDkVAGy0KrAgVTmQ&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/y0bU6qh1dY

Permanent link: aaaa.bot/r/y0bU6qh1dY · How we measure

Checked 2026-10-31 22:28:41 UTC. Full DNS report: dns.pizza/domain/fixmyfin.app · JSON: /api/v1/fixmyfin.app