Yes — scaffoldbuilder.app has IPv6.

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

This is a saved measurement from 2026-11-06 01:28 UTC. Check scaffoldbuilder.app live now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 scaffoldbuilder.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3036::ac43:bf0a answers · 443✓ 2606:4700:3037::6815:59c0 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. priscilla.ns.cloudflare.com ✓vicky.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://scaffoldbuilder.app/ via 2606:4700:3036::ac43:bf0a → 302https://blue-salad-f904.cloudflareaccess.com/cdn-cgi/access/login/scaffoldbuilder.app?kid=23582f99101e6c8601d5c7fd5ad285d463d2efa5fc264989a61db69538133e7b&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.eyJ0eXBlIjoibWV0YSIsImF1ZCI6IjIzNTgyZjk5MTAxZTZjODYwMWQ1YzdmZDVhZDI4NWQ0NjNkMmVmYTVmYzI2NDk4OWE2MWRiNjk1MzgxMzNlN2IiLCJob3N0bmFtZSI6InNjYWZmb2xkYnVpbGRlci5hcHAiLCJyZWRpcmVjdF91cmwiOiIvIiwic2VydmljZV90b2tlbl9zdGF0dXMiOmZhbHNlLCJpc193YXJwIjpmYWxzZSwiaXNfZ2F0ZXdheSI6ZmFsc2UsImV4cCI6MTc5MzkyODc4NCwibmJmIjoxNzkzOTI4NDg0LCJpYXQiOjE3OTM5Mjg0ODQsImF1dGhfc3RhdHVzIjoiTk9ORSIsIm10bHNfYXV0aCI6eyJjZXJ0X2lzc3Vlcl9kbiI6IiIsImNlcnRfc2VyaWFsIjoiIiwiY2VydF9pc3N1ZXJfc2tpIjoiIiwiY2VydF9wcmVzZW50ZWQiOmZhbHNlLCJjb21tb25fbmFtZSI6IiIsImF1dGhfc3RhdHVzIjoiTk9ORSJ9LCJyZWFsX2NvdW50cnkiOiJVUyIsImFwcF9zZXNzaW9uX2hhc2giOiI4OWU3OGUyNWU1YmY1YTQ4MDk3NjAwMDkwODA4MWM3ZmY4OTYyYWUwNTU2ODlmNzhlNTkzNjIyMTE0YWE5NjlmIn0.guZ79nXO3CBiH5rCr1u2BduQ0TxqZrmmbJpiu7f4c1BuHpUf_2Q2MHuAgSKV5V7n1khHluUxisB6vvo5IJm4YEDWFemJEntGyz82PHOJmECwfKybouZd0ylFcmnhC866UEtv61u2-9R5bEJgmYR7BKPPNrHjHc-JtuU2hhBtwkJMaFkEYk6-3iX9Q8irCXiTAfx6E3-y1UIvA8U1i8_aJ9lqzgSQEyyziFtl2W0bClLrg7Fw3OoUCyQ73WrtMduonmQCP_HBOuWj8gWDiPo3bNYFzQVrta51T6_hfkBz7rMQh8n1K9P5VvM5eqHxhDqw5VbELRE3CnHuuB8wr54ubg&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/scaffoldbuilder.app.svg)](https://aaaa.bot/scaffoldbuilder.app)

Check again

scaffoldbuilder.app Has IPv6

A (IPv4)	172.67.191.10 104.21.89.192
AAAA (IPv6)	2606:4700:3036::ac43:bf0a 2606:4700:3037::6815:59c0

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: scaffoldbuilder.app
Measured 2026-11-06 01:28:03 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.191.10, 104.21.89.192
AAAA (IPv6): 2606:4700:3036::ac43:bf0a, 2606:4700:3037::6815:59c0

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: scaffoldbuilder.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3036::ac43:bf0a: answers (TCP 443)
    2606:4700:3037::6815:59c0: 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://scaffoldbuilder.app/ via 2606:4700:3036::ac43:bf0a -> HTTP 302, certificate: valid
    https://blue-salad-f904.cloudflareaccess.com/cdn-cgi/access/login/scaffoldbuilder.app?kid=23582f99101e6c8601d5c7fd5ad285d463d2efa5fc264989a61db69538133e7b&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.guZ79nXO3CBiH5rCr1u2BduQ0TxqZrmmbJpiu7f4c1BuHpUf_2Q2MHuAgSKV5V7n1khHluUxisB6vvo5IJm4YEDWFemJEntGyz82PHOJmECwfKybouZd0ylFcmnhC866UEtv61u2-9R5bEJgmYR7BKPPNrHjHc-JtuU2hhBtwkJMaFkEYk6-3iX9Q8irCXiTAfx6E3-y1UIvA8U1i8_aJ9lqzgSQEyyziFtl2W0bClLrg7Fw3OoUCyQ73WrtMduonmQCP_HBOuWj8gWDiPo3bNYFzQVrta51T6_hfkBz7rMQh8n1K9P5VvM5eqHxhDqw5VbELRE3CnHuuB8wr54ubg&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/g4_vdVWNxt

Permanent link: aaaa.bot/r/g4_vdVWNxt · How we measure

Checked 2026-11-06 01:28:03 UTC. Full DNS report: dns.pizza/domain/scaffoldbuilder.app · Age, certificate and blocklists: how.is/scaffoldbuilder.app · JSON: /api/v1/scaffoldbuilder.app