Data Objects 

Objects related to IP address block.
        ID, Netblock, Org-Name

Objects related to Whois information.
        Street-Address, City, State
        Postal-Code
        Contact-Name, Contact-Email
        Phone, Fax

Objects related to DNS server.
        Name-Server, NS-Version
        SOA, M-Name, Serial

Objects related to delegation.
        NS-Delegation
        Parent-Zone, Child-Zone