It can be anything! An apex, subdomain, or even a URL.
Domain Name: www.auth.prod-beta.msp.cxDomain Status: No Object Found>>> Last update of WHOIS database: 2024-09-21T15:32:30.813Z <<<
Domain Name: www.auth.prod-beta.msp.cx
Domain Status: No Object Found
>>> Last update of WHOIS database: 2024-09-21T15:32:30.813Z <<<