Yes — scfdemo.site has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 scfdemo.site has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3033::6815:1629 answers · 443✓ 2606:4700:3032::ac43:caa2 answers · 443	yes
www over IPv6 www.scfdemo.site has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3033::6815:1629 answers · 443✓ 2606:4700:3032::ac43:caa2 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. dayana.ns.cloudflare.com ✓kai.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://scfdemo.site/ via 2606:4700:3033::6815:1629 → 302https://scfdemo.cloudflareaccess.com/cdn-cgi/access/login/scfdemo.site?kid=fb13b06fb2aec1467ffe359d3be6b009ceaf694c6ba9e052433c66319f9d59f0&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.q4RaQcQwxNtdhGhfVxDzq1oWhTPjMVenU0jWavdaWgXDTvn-9zuIwS0wXPUciMAa3P3Gxp3yU9Tz4Bjg0ErCAgBKhePF5x6ZEjNY36k2cq8xPRY_zglrYQ2xO8C473l38dmDxkKRcKzFKGvh7gcjT7gPGIZA3tvHZqzUhbDgAWgqAKHqNnxxZ1ssTT9gOC0Tuv1hkqlxLPjrGK30ShJ3zC0PylFv8csVHL7RzBMYd9mfaEhMkOG7JsywcnFlP5mVcgOqVVnUJ1LyLkaLn5uo6xII5jvGWrvKAipSZgY7Cpv1aAUJtn2UJcPYs6-tylYZS3eTEwauxOfabYbZKLBavw&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/scfdemo.site.svg)](https://aaaa.bot/scfdemo.site)

Check again

scfdemo.site Has IPv6

A (IPv4)	172.67.202.162 104.21.22.41
AAAA (IPv6)	2606:4700:3033::6815:1629 2606:4700:3032::ac43:caa2

www.scfdemo.site Has IPv6

A (IPv4)	104.21.22.41 172.67.202.162
AAAA (IPv6)	2606:4700:3033::6815:1629 2606:4700:3032::ac43:caa2

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: scfdemo.site
Measured 2026-11-03 04:26:42 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.202.162, 104.21.22.41
AAAA (IPv6): 2606:4700:3033::6815:1629, 2606:4700:3032::ac43:caa2
www AAAA:    2606:4700:3033::6815:1629, 2606:4700:3032::ac43:caa2

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: scfdemo.site has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3033::6815:1629: answers (TCP 443)
    2606:4700:3032::ac43:caa2: answers (TCP 443)
- www over IPv6: www.scfdemo.site has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3033::6815:1629: answers (TCP 443)
    2606:4700:3032::ac43:caa2: 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://scfdemo.site/ via 2606:4700:3033::6815:1629 -> HTTP 302, certificate: valid
    https://scfdemo.cloudflareaccess.com/cdn-cgi/access/login/scfdemo.site?kid=fb13b06fb2aec1467ffe359d3be6b009ceaf694c6ba9e052433c66319f9d59f0&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.q4RaQcQwxNtdhGhfVxDzq1oWhTPjMVenU0jWavdaWgXDTvn-9zuIwS0wXPUciMAa3P3Gxp3yU9Tz4Bjg0ErCAgBKhePF5x6ZEjNY36k2cq8xPRY_zglrYQ2xO8C473l38dmDxkKRcKzFKGvh7gcjT7gPGIZA3tvHZqzUhbDgAWgqAKHqNnxxZ1ssTT9gOC0Tuv1hkqlxLPjrGK30ShJ3zC0PylFv8csVHL7RzBMYd9mfaEhMkOG7JsywcnFlP5mVcgOqVVnUJ1LyLkaLn5uo6xII5jvGWrvKAipSZgY7Cpv1aAUJtn2UJcPYs6-tylYZS3eTEwauxOfabYbZKLBavw&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/udB_EHX_FX

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

Checked 2026-11-03 04:26:42 UTC. Full DNS report: dns.pizza/domain/scfdemo.site · Age, certificate and blocklists: how.is/scfdemo.site · JSON: /api/v1/scfdemo.site