It can be anything! An apex, subdomain, or even a URL.
Domain Name: hostmaster.www.hostmaster.www.ww16.tub.im The domain hostmaster.www.hostmaster.www.ww16.tub.im was not found.
Domain Name: hostmaster.www.hostmaster.www.ww16.tub.im
The domain hostmaster.www.hostmaster.www.ww16.tub.im was not found.