Yes — ceerahr.dev has IPv6.

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

IPv6 readiness

Works over IPv6, with one gap: its mail servers lack IPv6.

Website over IPv6 ceerahr.dev has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::6815:1245 answers · 443✓ 2606:4700:3037::ac43:b4c6 answers · 443	yes
www over IPv6 www.ceerahr.dev has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::ac43:b4c6 answers · 443✓ 2606:4700:3037::6815:1245 answers · 443	yes
Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. eforward1.registrar-servers.com ✗eforward2.registrar-servers.com ✗eforward3.registrar-servers.com ✗eforward4.registrar-servers.com ✗eforward5.registrar-servers.com ✗	no
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. diana.ns.cloudflare.com ✓gerald.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://ceerahr.dev/ via 2606:4700:3037::6815:1245 → 302https://patient-river-d626.cloudflareaccess.com/cdn-cgi/access/login/ceerahr.dev?kid=a6c04413068f7e396e71e5f5dcf24c580258bc118c00d46d6c220d92822cb49b&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.OmZ0Gw27odXmskZIWXFZOL-ZchgfMXQJZBjj6sM06GIqbDL33u3X9rVv9c7erxnUYQX5iWTdeIlgVXJUpzzD0PpmLlOSjUn3i4JM7x3M3NBcotHYP0sNhxiXFLo4J63qOOYqY-wS8XAWGdJ49DfGQfV_9lhN8Qa2RvzJaBw47Xb0pCgRus3GWVfdIfNzhrCj6XgeMn5HO88S5EnRh1puiuKTNSQ7PvxaHyERUp2Jo7U6QMOn5uztHcb7Az6nOgAi63LeGJ5-yfXN_6RTFn7gB_pg98jT6smBmkrPlNAmDL30MzQzQc3m86RNCagjwTPJajmbV6yWBaLB15nabYy2zw&redirect_url=%2F via 2606:4700:300a::6813:c21d → 200

works

What's keeping ceerahr.dev from an A

Mail servers without IPv6
eforward1.registrar-servers.com, eforward2.registrar-servers.com, eforward3.registrar-servers.com, eforward4.registrar-servers.com, eforward5.registrar-servers.com have no AAAA record, so mail from IPv6-only servers can't reach them directly. If a provider runs your mail, that's their setting; if you run it, add AAAA records for these hosts.

Check again

ceerahr.dev Has IPv6

A (IPv4)	172.67.180.198 104.21.18.69
AAAA (IPv6)	2606:4700:3037::6815:1245 2606:4700:3037::ac43:b4c6

www.ceerahr.dev Has IPv6

A (IPv4)	104.21.18.69 172.67.180.198
AAAA (IPv6)	2606:4700:3037::ac43:b4c6 2606:4700:3037::6815:1245

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: ceerahr.dev
Measured 2026-11-05 06:33:39 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.180.198, 104.21.18.69
AAAA (IPv6): 2606:4700:3037::6815:1245, 2606:4700:3037::ac43:b4c6
www AAAA:    2606:4700:3037::ac43:b4c6, 2606:4700:3037::6815:1245

Readiness grade B: Works over IPv6, with one gap: its mail servers lack IPv6.
- Website over IPv6: ceerahr.dev has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3037::6815:1245: answers (TCP 443)
    2606:4700:3037::ac43:b4c6: answers (TCP 443)
- www over IPv6: www.ceerahr.dev has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3037::ac43:b4c6: answers (TCP 443)
    2606:4700:3037::6815:1245: answers (TCP 443)
- Mail servers (MX) have IPv6: None of the mail servers 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://ceerahr.dev/ via 2606:4700:3037::6815:1245 -> HTTP 302, certificate: valid
    https://patient-river-d626.cloudflareaccess.com/cdn-cgi/access/login/ceerahr.dev?kid=a6c04413068f7e396e71e5f5dcf24c580258bc118c00d46d6c220d92822cb49b&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.OmZ0Gw27odXmskZIWXFZOL-ZchgfMXQJZBjj6sM06GIqbDL33u3X9rVv9c7erxnUYQX5iWTdeIlgVXJUpzzD0PpmLlOSjUn3i4JM7x3M3NBcotHYP0sNhxiXFLo4J63qOOYqY-wS8XAWGdJ49DfGQfV_9lhN8Qa2RvzJaBw47Xb0pCgRus3GWVfdIfNzhrCj6XgeMn5HO88S5EnRh1puiuKTNSQ7PvxaHyERUp2Jo7U6QMOn5uztHcb7Az6nOgAi63LeGJ5-yfXN_6RTFn7gB_pg98jT6smBmkrPlNAmDL30MzQzQc3m86RNCagjwTPJajmbV6yWBaLB15nabYy2zw&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/drclOOMwsv

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

Checked 2026-11-05 06:33:39 UTC. Full DNS report: dns.pizza/domain/ceerahr.dev · Age, certificate and blocklists: how.is/ceerahr.dev · JSON: /api/v1/ceerahr.dev