Yes — bigboss.build has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 bigboss.build has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3032::ac43:c88a answers · 443✓ 2606:4700:3035::6815:3493 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. annalise.ns.cloudflare.com ✓jaime.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://bigboss.build/ via 2606:4700:3032::ac43:c88a → 302https://curly-queen-5d38.cloudflareaccess.com/cdn-cgi/access/login/bigboss.build?kid=6f57e4e795c838669bec29e39279a0fa807b83c873d52229025e453e0c018a35&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.hTyB2qVMvadm8jiV73fQCo9QBFvqBhG2x2-uvjBII8tZQ7zNUC5JCJZTrDfwLEVbr2yfNlHRHstFgSvTuPvmJ4PZdR4IFjDlGgscjy2RgdcXLxDXE7696MYr4KMOar6qgQsEY6icGgILLVZk3pS4RZizW9AM7OWcrifISgTKMR_JCnDAxjfjbZC_CzJwBCWzyV_j3P4_a8tVrHvcxpMmma2clkueclJrStK15ZyqH5Tc9yWGIgiDCVbyQL5Yfh6zAqtE_1joozqSj9shQv-_6UEatf2Us6Hll5F8wpfp3iuoOAqcyuZp5hXSLlreW3Ogn0-TlpF8o7acWqMvHskL9Q&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/bigboss.build.svg)](https://aaaa.bot/bigboss.build)

Check again

bigboss.build Has IPv6

A (IPv4)	172.67.200.138 104.21.52.147
AAAA (IPv6)	2606:4700:3032::ac43:c88a 2606:4700:3035::6815:3493

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: bigboss.build
Measured 2026-11-14 11:36:24 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.200.138, 104.21.52.147
AAAA (IPv6): 2606:4700:3032::ac43:c88a, 2606:4700:3035::6815:3493

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: bigboss.build has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3032::ac43:c88a: answers (TCP 443)
    2606:4700:3035::6815:3493: 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://bigboss.build/ via 2606:4700:3032::ac43:c88a -> HTTP 302, certificate: valid
    https://curly-queen-5d38.cloudflareaccess.com/cdn-cgi/access/login/bigboss.build?kid=6f57e4e795c838669bec29e39279a0fa807b83c873d52229025e453e0c018a35&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.hTyB2qVMvadm8jiV73fQCo9QBFvqBhG2x2-uvjBII8tZQ7zNUC5JCJZTrDfwLEVbr2yfNlHRHstFgSvTuPvmJ4PZdR4IFjDlGgscjy2RgdcXLxDXE7696MYr4KMOar6qgQsEY6icGgILLVZk3pS4RZizW9AM7OWcrifISgTKMR_JCnDAxjfjbZC_CzJwBCWzyV_j3P4_a8tVrHvcxpMmma2clkueclJrStK15ZyqH5Tc9yWGIgiDCVbyQL5Yfh6zAqtE_1joozqSj9shQv-_6UEatf2Us6Hll5F8wpfp3iuoOAqcyuZp5hXSLlreW3Ogn0-TlpF8o7acWqMvHskL9Q&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/lh6Qgrje4F

Permanent link: aaaa.bot/r/lh6Qgrje4F · How we measure

Checked 2026-11-14 11:36:24 UTC. Full DNS report: dns.pizza/domain/bigboss.build · Age, certificate and blocklists: how.is/bigboss.build · JSON: /api/v1/bigboss.build