Yes — kmunaoka.dev has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 kmunaoka.dev has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3036::6815:82b answers · 443✓ 2606:4700:3035::ac43:9ccf 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. keenan.ns.cloudflare.com ✓pat.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://kmunaoka.dev/ via 2606:4700:3036::6815:82b → 302https://kmunaoka-pages.cloudflareaccess.com/cdn-cgi/access/login/kmunaoka.dev?kid=7fe74a32016f82b56dede13f497b68ee0f948ce37398e2fcb16df1cfd618d1d6&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.eujNxAurMKminOVsiNVxYFScSPTnGxVSZqy-FSlMNTpviodDt2twmAX41fF9cVkiXr1gc2d7aA2JnDoLexWKOwupQVnJBaX_dFw8mMJaFGXidzmwQ4tcj5BxOva4nMVoStgmhNvwY3agI7VGBFegb6VPiS1ULhm2uqOY0bo05UDbjpeGJccgo-8VpK4sFVjF1yUYMoc5eJrevbds6W2t1fk_KkifF6WCEuTtgyIGu9pj57wZ9QOuDIX-i-J-bAXZuUb6CcFjOxH0nUSMh9uQKzFWe_VujMl1bW8hUO4CHTNnEVTFhcVdhjoxhOi08MCh_BGzatCKGkRgUZ5YAI4pMg&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/kmunaoka.dev.svg)](https://aaaa.bot/kmunaoka.dev)

Check again

kmunaoka.dev Has IPv6

A (IPv4)	172.67.156.207 104.21.8.43
AAAA (IPv6)	2606:4700:3036::6815:82b 2606:4700:3035::ac43:9ccf

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: kmunaoka.dev
Measured 2026-11-10 09:52:04 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.156.207, 104.21.8.43
AAAA (IPv6): 2606:4700:3036::6815:82b, 2606:4700:3035::ac43:9ccf

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: kmunaoka.dev has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3036::6815:82b: answers (TCP 443)
    2606:4700:3035::ac43:9ccf: 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://kmunaoka.dev/ via 2606:4700:3036::6815:82b -> HTTP 302, certificate: valid
    https://kmunaoka-pages.cloudflareaccess.com/cdn-cgi/access/login/kmunaoka.dev?kid=7fe74a32016f82b56dede13f497b68ee0f948ce37398e2fcb16df1cfd618d1d6&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.eujNxAurMKminOVsiNVxYFScSPTnGxVSZqy-FSlMNTpviodDt2twmAX41fF9cVkiXr1gc2d7aA2JnDoLexWKOwupQVnJBaX_dFw8mMJaFGXidzmwQ4tcj5BxOva4nMVoStgmhNvwY3agI7VGBFegb6VPiS1ULhm2uqOY0bo05UDbjpeGJccgo-8VpK4sFVjF1yUYMoc5eJrevbds6W2t1fk_KkifF6WCEuTtgyIGu9pj57wZ9QOuDIX-i-J-bAXZuUb6CcFjOxH0nUSMh9uQKzFWe_VujMl1bW8hUO4CHTNnEVTFhcVdhjoxhOi08MCh_BGzatCKGkRgUZ5YAI4pMg&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/JckYK4gK73

Permanent link: aaaa.bot/r/JckYK4gK73 · How we measure

Checked 2026-11-10 09:52:04 UTC. Full DNS report: dns.pizza/domain/kmunaoka.dev · Age, certificate and blocklists: how.is/kmunaoka.dev · JSON: /api/v1/kmunaoka.dev