If you plan to operate a primary DNS name server, you must register your name server with your parent domain. Not all your name servers need to be registered, but we recommend registering one-third to one-half of your name servers (up to a maximum of 10) with the parent domain. These servers are queried by servers outside your domain. The remaining name servers are queried only by hosts within your domain that are configured to query them.
If you provide DNS service for other domains and provide an authoritative name server for those domains, you must also register those domains.
To register a domain (and subdomain), you must contact the network administrators of the parent domain (com, for example) and the in-addr.arpa domain. Provide the administrators with the name of the domain name server and the name of the domain and any subdomains for which it is authoritative. If you are setting up a new domain, you also need to provide the IP address of any server you want to register.
InterNIC is the organization that registers domain names for the ROOT, com, org, net, edu, and gov domains. To obtain the form for domain registration from InterNIC, contact them at http://rs.internic.net. You can also obtain the form for in-addr.arpa domain registration from the same location.
Detailed information about the registration process is available from the InterNIC web site. You can also use the InterNIC web site to research domain names to ensure that the name you want is not already registered and to obtain additional information and help.