Possible.......

[RyanDOT]

to make a subdomain like 000webhost.com

Get hosting, and can mange your own account via cPanel...

[Luke]

yes, i think most billing systems do it automatically ( i think)

You'd just need a vps or dedi, install a billing system like WHCMS or something and away you go ;p

So it would be like name.yourhost.com