Yes — meowsaic.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 meowsaic.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3033::6815:1251 answers · 443✓ 2606:4700:3031::ac43:b53e 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. hera.ns.cloudflare.com ✓piers.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://meowsaic.app/ via 2606:4700:3033::6815:1251 → 302https://empty-darkness-b8dd.cloudflareaccess.com/cdn-cgi/access/login/meowsaic.app?kid=7e2e461be45d3d82849949507ef1240b88872d2001956d6e4fd1a146dda7cabf&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.U3sm3-7C-08YMJXlT9MajRiDXJ4wqbYaYZ5SwTyx4fUwbv2FbLea1SfdUB0doFIyCdUZPAoIJI7k3fR4iYq9Uf16SvDSPYS5UsJMgU5xH2hWdd7WjDYI38Ge6iZD6CLYpM-yVqakSQ4wBHAzfVX4s9zY5nrz35iWNeU2R1trVYoa69VkX359LG1I3ofwypHOyxXObh7eg2n-9UYACxd8KcmBLA0JzrCuJ5J4MUY-ui4vyFw2KDFSg1-o8zAT8k_0sGOjwI3FTePRj_oH0ItgerCx3p4hql1yBf5bNUlSg_x62vh2zcOiEGVsO3RxaKZLnzXHmc0AnAkG7qHXhW_byw&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/meowsaic.app.svg)](https://aaaa.bot/meowsaic.app)

Check again

meowsaic.app Has IPv6

A (IPv4)	104.21.18.81 172.67.181.62
AAAA (IPv6)	2606:4700:3033::6815:1251 2606:4700:3031::ac43:b53e

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: meowsaic.app
Measured 2026-11-10 10:46:22 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.18.81, 172.67.181.62
AAAA (IPv6): 2606:4700:3033::6815:1251, 2606:4700:3031::ac43:b53e

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: meowsaic.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3033::6815:1251: answers (TCP 443)
    2606:4700:3031::ac43:b53e: 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://meowsaic.app/ via 2606:4700:3033::6815:1251 -> HTTP 302, certificate: valid
    https://empty-darkness-b8dd.cloudflareaccess.com/cdn-cgi/access/login/meowsaic.app?kid=7e2e461be45d3d82849949507ef1240b88872d2001956d6e4fd1a146dda7cabf&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.U3sm3-7C-08YMJXlT9MajRiDXJ4wqbYaYZ5SwTyx4fUwbv2FbLea1SfdUB0doFIyCdUZPAoIJI7k3fR4iYq9Uf16SvDSPYS5UsJMgU5xH2hWdd7WjDYI38Ge6iZD6CLYpM-yVqakSQ4wBHAzfVX4s9zY5nrz35iWNeU2R1trVYoa69VkX359LG1I3ofwypHOyxXObh7eg2n-9UYACxd8KcmBLA0JzrCuJ5J4MUY-ui4vyFw2KDFSg1-o8zAT8k_0sGOjwI3FTePRj_oH0ItgerCx3p4hql1yBf5bNUlSg_x62vh2zcOiEGVsO3RxaKZLnzXHmc0AnAkG7qHXhW_byw&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/AjDl8_Diwi

Permanent link: aaaa.bot/r/AjDl8_Diwi · How we measure

Checked 2026-11-10 10:46:22 UTC. Full DNS report: dns.pizza/domain/meowsaic.app · Age, certificate and blocklists: how.is/meowsaic.app · JSON: /api/v1/meowsaic.app