It can be anything! An apex, subdomain, or even a URL.
Domain Name: o365test.aka.msDomain Status: No Object Found>>> Last update of WHOIS database: 2024-09-20T08:23:40.312Z <<<
Domain Name: o365test.aka.ms
Domain Status: No Object Found
>>> Last update of WHOIS database: 2024-09-20T08:23:40.312Z <<<