It can be anything! An apex, subdomain, or even a URL.
Domain Name: support.hornbill.aiDomain Status: No Object Found>>> Last update of WHOIS database: 2024-09-21T00:23:32.732Z <<<
Domain Name: support.hornbill.ai
Domain Status: No Object Found
>>> Last update of WHOIS database: 2024-09-21T00:23:32.732Z <<<