It can be anything! An apex, subdomain, or even a URL.
Domain Name: status.success.aiDomain Status: No Object Found>>> Last update of WHOIS database: 2024-09-25T20:28:06.220Z <<<
Domain Name: status.success.ai
Domain Status: No Object Found
>>> Last update of WHOIS database: 2024-09-25T20:28:06.220Z <<<