It can be anything! An apex, subdomain, or even a URL.
Domain Name: test.peaks.aiDomain Status: No Object Found>>> Last update of WHOIS database: 2024-09-21T17:06:02.460Z <<<
Domain Name: test.peaks.ai
Domain Status: No Object Found
>>> Last update of WHOIS database: 2024-09-21T17:06:02.460Z <<<