It can be anything! An apex, subdomain, or even a URL.
Domain Name: covid19.unfolded.aiDomain Status: No Object Found>>> Last update of WHOIS database: 2024-09-20T17:39:00.055Z <<<
Domain Name: covid19.unfolded.ai
Domain Status: No Object Found
>>> Last update of WHOIS database: 2024-09-20T17:39:00.055Z <<<