Yes — squareatlas.app has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 squareatlas.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3032::ac43:d57d answers · 443✓ 2606:4700:3037::6815:3dc6 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. agustin.ns.cloudflare.com ✓sierra.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://squareatlas.app/ via 2606:4700:3032::ac43:d57d → 302https://ungtsteg.cloudflareaccess.com/cdn-cgi/access/login/squareatlas.app?kid=df5023aad164dc93dfb84287ddc005d48f7185078b359042a07e734b7f71d942&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjJiOTMzNDRkNjhiYzhkMjBmMDdjOGM5MjA5ZTY4ZTkzZmE3ZWZkZWRhZjE0YmQxZWUxODBjNTA4NGFkNjMxMjUifQ.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.ESi4RMeiMT9FmQ_Uh7_aV8EAMUm0F2PRstbF9OmuDa2VvE3EoMsIyzdccA7ovdEyg4yyihqWf0PTBOPWHGmdrvNsMbIqkQSEj2agQyZRZ4neaj6fbiXzsKf80MlE3ymYW1F5ZzCpgGAleQnfP9LjJ30emjCXitNHtTq4mDuQ7tPk-BXtGBvbx5K2EwKwXHPBupqAiqZjFWRwH1ufUoEOCx061ibb5mzQXWEDZuSXWtkqioWZx2X-O02-HesJ4oUK7M4SP0XYTIZHd1PXDChQzoLS7J9aaeVfEqKbkuK4KtVl86s3-P_wvFKkOp9wiYGVmg2G7C8nifE8NUx4fSNAQA&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/squareatlas.app.svg)](https://aaaa.bot/squareatlas.app)

Check again

squareatlas.app Has IPv6

A (IPv4)	172.67.213.125 104.21.61.198
AAAA (IPv6)	2606:4700:3032::ac43:d57d 2606:4700:3037::6815:3dc6

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: squareatlas.app
Measured 2026-11-06 06:29:47 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.213.125, 104.21.61.198
AAAA (IPv6): 2606:4700:3032::ac43:d57d, 2606:4700:3037::6815:3dc6

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: squareatlas.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3032::ac43:d57d: answers (TCP 443)
    2606:4700:3037::6815:3dc6: 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://squareatlas.app/ via 2606:4700:3032::ac43:d57d -> HTTP 302, certificate: valid
    https://ungtsteg.cloudflareaccess.com/cdn-cgi/access/login/squareatlas.app?kid=df5023aad164dc93dfb84287ddc005d48f7185078b359042a07e734b7f71d942&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjJiOTMzNDRkNjhiYzhkMjBmMDdjOGM5MjA5ZTY4ZTkzZmE3ZWZkZWRhZjE0YmQxZWUxODBjNTA4NGFkNjMxMjUifQ.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.ESi4RMeiMT9FmQ_Uh7_aV8EAMUm0F2PRstbF9OmuDa2VvE3EoMsIyzdccA7ovdEyg4yyihqWf0PTBOPWHGmdrvNsMbIqkQSEj2agQyZRZ4neaj6fbiXzsKf80MlE3ymYW1F5ZzCpgGAleQnfP9LjJ30emjCXitNHtTq4mDuQ7tPk-BXtGBvbx5K2EwKwXHPBupqAiqZjFWRwH1ufUoEOCx061ibb5mzQXWEDZuSXWtkqioWZx2X-O02-HesJ4oUK7M4SP0XYTIZHd1PXDChQzoLS7J9aaeVfEqKbkuK4KtVl86s3-P_wvFKkOp9wiYGVmg2G7C8nifE8NUx4fSNAQA&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/tCL4HHUka7

Permanent link: aaaa.bot/r/tCL4HHUka7 · How we measure

Checked 2026-11-06 06:29:47 UTC. Full DNS report: dns.pizza/domain/squareatlas.app · Age, certificate and blocklists: how.is/squareatlas.app · JSON: /api/v1/squareatlas.app