It can be anything! An apex, subdomain, or even a URL.
Domain Name: www.line-dev.onedee.aiDomain Status: No Object Found>>> Last update of WHOIS database: 2024-09-20T20:28:27.801Z <<<
Domain Name: www.line-dev.onedee.ai
Domain Status: No Object Found
>>> Last update of WHOIS database: 2024-09-20T20:28:27.801Z <<<