Yes — api.ifortuna.cz has IPv6.

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

A
IPv6 readiness
Website, mail and DNS all work over IPv6.
Website over IPv6
api.ifortuna.cz has 2 IPv6 addresses and answers on every one we tested.
✓ 2a06:98c1:3105::ac40:92fa answers · 443✓ 2a06:98c1:3101::6812:2906 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.
kipp.ns.cloudflare.com ✓zara.ns.cloudflare.com ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 403.
https://api.ifortuna.cz/ via 2a06:98c1:3105::ac40:92fa → 403
works
 Which outside scripts, fonts, payments or chat api.ifortuna.cz loads from have no IPv6.
 Load api.ifortuna.cz over IPv6 from up to six other places — a second opinion.

Nothing keeping you from an A

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

Check again

api.ifortuna.cz  Has IPv6

A (IPv4)172.64.146.250
104.18.41.6
AAAA (IPv6)2a06:98c1:3105::ac40:92fa
2a06:98c1:3101::6812:2906

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

 Permanent link: aaaa.bot/r/PaQDiUd3pa · How we measure

Checked 2026-11-15 17:37:19 UTC. Full DNS report: dns.pizza/domain/api.ifortuna.cz · Age, certificate and blocklists: how.is/api.ifortuna.cz · JSON: /api/v1/api.ifortuna.cz