Yes — kankan.best has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 kankan.best has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::ac43:c72a answers · 443✓ 2606:4700:3035::6815:5ce1 answers · 443	yes
www over IPv6 www.kankan.best has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::ac43:c72a answers · 443✓ 2606:4700:3035::6815:5ce1 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. launch1.spaceship.net ✓launch2.spaceship.net ✓	yes

HTTPS over IPv6 · not part of the grade yet
kankan.best didn't complete an HTTPS request over IPv6 (ERR_SSL_SSL/TLS_ALERT_HANDSHAKE_FAILURE).

https://kankan.best/ via 2606:4700:3031::ac43:c72a · ERR_SSL_SSL/TLS_ALERT_HANDSHAKE_FAILURE

Nothing keeping you from an A

Nothing to fix
Show it off: add the badge to your README.
[![IPv6](https://aaaa.bot/badge/kankan.best.svg)](https://aaaa.bot/kankan.best)

Check again

kankan.best Has IPv6

A (IPv4)	104.21.92.225 172.67.199.42
AAAA (IPv6)	2606:4700:3031::ac43:c72a 2606:4700:3035::6815:5ce1

www.kankan.best Has IPv6

Alias of	customers.dropora.net
A (IPv4)	172.67.199.42 104.21.92.225
AAAA (IPv6)	2606:4700:3031::ac43:c72a 2606:4700:3035::6815:5ce1

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: kankan.best
Measured 2026-11-06 17:45:33 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.92.225, 172.67.199.42
AAAA (IPv6): 2606:4700:3031::ac43:c72a, 2606:4700:3035::6815:5ce1
www AAAA:    2606:4700:3031::ac43:c72a, 2606:4700:3035::6815:5ce1

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: kankan.best has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3031::ac43:c72a: answers (TCP 443)
    2606:4700:3035::6815:5ce1: answers (TCP 443)
- www over IPv6: www.kankan.best has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3031::ac43:c72a: answers (TCP 443)
    2606:4700:3035::6815:5ce1: 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): kankan.best didn't complete an HTTPS request over IPv6 (ERR_SSL_SSL/TLS_ALERT_HANDSHAKE_FAILURE).
    https://kankan.best/ via 2606:4700:3031::ac43:c72a (ERR_SSL_SSL/TLS_ALERT_HANDSHAKE_FAILURE)
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/q0zC_CALff

Permanent link: aaaa.bot/r/q0zC_CALff · How we measure

Checked 2026-11-06 17:45:33 UTC. Full DNS report: dns.pizza/domain/kankan.best · Age, certificate and blocklists: how.is/kankan.best · JSON: /api/v1/kankan.best