Yes — skeller.dev has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 skeller.dev has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::6815:fea answers · 443✓ 2606:4700:3030::ac43:d09d 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. alexia.ns.cloudflare.com ✓robert.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://skeller.dev/ via 2606:4700:3031::6815:fea → 302https://dry-bread-919d.cloudflareaccess.com/cdn-cgi/access/login/skeller.dev?kid=2a6ca7d94470dc1cd6681f0bbab46b269f9ae791e337b0185d80f041a9f2f7d6&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImZhY2FiNWJmMDMwYzA3MTkzNTA1NzdlZjk5ZTNiZjFhY2JhMzgyNTVlM2NiMTU0ZjBkMTg3ODBkNzRkZmU3NGIifQ.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.IX0fTJqi-p193yN9fPGVSfUkH4g0-VcHG9-lj5r1lqCqtKI-75nRkNDtL0vk1Xf90yu5294VRzfUOvsgEJ5qJwX_c7UTIJRQMJ3KkrpAet93bIe1n0bU-P_5r5JgEYHkhPg77LGRpT06LXLfnx1Mg8aHujwaf9z-R6Bty5_Upwq17mWaTL_v1Plsp00GPkNoOHqsuy_QSxjlJpsGkj63BuWMEAbo6bJFTpn5Kj4En-SObm2QPrGJGvA3rs1KKwPj87GhhXG93HVPTiPiDG7JnFgmMXamGW3WTBd2S-fCKV199bmtdORapa-7hMqIUj-FzvUPV4yi-Au2g6jtKuNwXA&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/skeller.dev.svg)](https://aaaa.bot/skeller.dev)

Check again

skeller.dev Has IPv6

A (IPv4)	104.21.15.234 172.67.208.157
AAAA (IPv6)	2606:4700:3031::6815:fea 2606:4700:3030::ac43:d09d

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: skeller.dev
Measured 2026-11-14 05:34:27 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.15.234, 172.67.208.157
AAAA (IPv6): 2606:4700:3031::6815:fea, 2606:4700:3030::ac43:d09d

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: skeller.dev has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3031::6815:fea: answers (TCP 443)
    2606:4700:3030::ac43:d09d: 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://skeller.dev/ via 2606:4700:3031::6815:fea -> HTTP 302, certificate: valid
    https://dry-bread-919d.cloudflareaccess.com/cdn-cgi/access/login/skeller.dev?kid=2a6ca7d94470dc1cd6681f0bbab46b269f9ae791e337b0185d80f041a9f2f7d6&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6ImZhY2FiNWJmMDMwYzA3MTkzNTA1NzdlZjk5ZTNiZjFhY2JhMzgyNTVlM2NiMTU0ZjBkMTg3ODBkNzRkZmU3NGIifQ.eyJ0eXBlIjoibWV0YSIsImF1ZCI6IjJhNmNhN2Q5NDQ3MGRjMWNkNjY4MWYwYmJhYjQ2YjI2OWY5YWU3OTFlMzM3YjAxODVkODBmMDQxYTlmMmY3ZDYiLCJob3N0bmFtZSI6InNrZWxsZXIuZGV2IiwicmVkaXJlY3RfdXJsIjoiLyIsInNlcnZpY2VfdG9rZW5fc3RhdHVzIjpmYWxzZSwiaXNfd2FycCI6ZmFsc2UsImlzX2dhdGV3YXkiOmZhbHNlLCJleHAiOjE3OTQ2MzQ3NjcsIm5iZiI6MTc5NDYzNDQ2NywiaWF0IjoxNzk0NjM0NDY3LCJhdXRoX3N0YXR1cyI6Ik5PTkUiLCJtdGxzX2F1dGgiOnsiY2VydF9pc3N1ZXJfZG4iOiIiLCJjZXJ0X3NlcmlhbCI6IiIsImNlcnRfaXNzdWVyX3NraSI6IiIsImNlcnRfcHJlc2VudGVkIjpmYWxzZSwiY29tbW9uX25hbWUiOiIiLCJhdXRoX3N0YXR1cyI6Ik5PTkUifSwicmVhbF9jb3VudHJ5IjoiVVMiLCJhcHBfc2Vzc2lvbl9oYXNoIjoiNWY0NTgyYjg5NzQ3NWNhNGIwOWI3ZGRhYWFjZGE4ODEzNzIyMmU3MGNiYWJhMDNkNDA0ZDY1NzUzOTk5NmE3MCJ9.IX0fTJqi-p193yN9fPGVSfUkH4g0-VcHG9-lj5r1lqCqtKI-75nRkNDtL0vk1Xf90yu5294VRzfUOvsgEJ5qJwX_c7UTIJRQMJ3KkrpAet93bIe1n0bU-P_5r5JgEYHkhPg77LGRpT06LXLfnx1Mg8aHujwaf9z-R6Bty5_Upwq17mWaTL_v1Plsp00GPkNoOHqsuy_QSxjlJpsGkj63BuWMEAbo6bJFTpn5Kj4En-SObm2QPrGJGvA3rs1KKwPj87GhhXG93HVPTiPiDG7JnFgmMXamGW3WTBd2S-fCKV199bmtdORapa-7hMqIUj-FzvUPV4yi-Au2g6jtKuNwXA&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/TFIfGx9430

Permanent link: aaaa.bot/r/TFIfGx9430 · How we measure

Checked 2026-11-14 05:34:27 UTC. Full DNS report: dns.pizza/domain/skeller.dev · Age, certificate and blocklists: how.is/skeller.dev · JSON: /api/v1/skeller.dev