It can be anything! An apex, subdomain, or even a URL.
Domain Name: registry.nic.cxDomain Status: No Object Found>>> Last update of WHOIS database: 2024-09-20T16:48:36.934Z <<<
Domain Name: registry.nic.cx
Domain Status: No Object Found
>>> Last update of WHOIS database: 2024-09-20T16:48:36.934Z <<<