Apex, subdomain, or URL. We figure it out.
Results for
RDAP source
https://rdap.nic.cz
port 43: whois.nic.cz
The domain is active in the registry.
Signed delegation in place.
WHOIS source
whois.nic.cz
REG-THINLINE REG-CZNIC REG-CZNIC
THINline s.r.o. CZ.NIC, z.s.p.o.
Make a direct request at ICANN.