It can be anything! An apex, subdomain, or even a URL.
Domain Name: www.books.ecdata.aiDomain Status: No Object Found>>> Last update of WHOIS database: 2024-09-25T14:18:40.237Z <<<
Domain Name: www.books.ecdata.ai
Domain Status: No Object Found
>>> Last update of WHOIS database: 2024-09-25T14:18:40.237Z <<<