DNS is federated, which means a central authority has discretion over how it's distributed and to whom. You can put up your own server at any time, but nobody b

DNS is federated, which means a central authority has discretion over how it's distributed and to whom. You can put up your own server at any time, but nobody besides you will use it unless VeriSign (or whoever operates the registry for your TLD) agrees that it is currently authoritative for your subdomain.