It can be anything! An apex, subdomain, or even a URL.
Domain Name: www.staging.vector.aiDomain Status: No Object Found>>> Last update of WHOIS database: 2024-09-21T18:05:05.252Z <<<
Domain Name: www.staging.vector.ai
Domain Status: No Object Found
>>> Last update of WHOIS database: 2024-09-21T18:05:05.252Z <<<