It can be anything! An apex, subdomain, or even a URL.
Domain Name: www.app.cotreat.aiDomain Status: No Object Found>>> Last update of WHOIS database: 2024-09-22T13:16:05.618Z <<<
Domain Name: www.app.cotreat.ai
Domain Status: No Object Found
>>> Last update of WHOIS database: 2024-09-22T13:16:05.618Z <<<