






                           DDN Network Information Center


            _A_d_d_r_e_s_s:
            SRI International
            Network Information Systems Center, Room EJ291
            333 Ravenswood Avenue
            Menlo Park, CA 94015

            _E-_m_a_i_l: NIC@NIC.DDN.MIL (for general user questions or docu-
            ment requests)

            _P_h_o_n_e: 1-800-235-3155 or (415) 859-3695


            _D_e_s_c_r_i_p_t_i_o_n

            The DDN Network Information  Center  (NIC)  assists  Defense
            Data  Network  (DDN)  users  and  potential  subscribers  in
            obtaining pertinent information about the DDN and the Inter-
            net.

            The NIC provides the  following  databases  and  information
            servers:

            o+    WHOIS registry of users, hosts, domains, and networks

            o+    NIC/QUERY browsing system

            o+    TACNEWS server

            o+    SERVICE electronic mail server

            The NIC provides host  name  translation  tables,  maintains
            domain  name system server files, assigns IP network numbers
            and autonomous system numbers, registers network users,  and
            issues  MILNET TAC access cards.  The NIC is the site of the
            DDN Security Coordination Center (SCC).  The NIC is also the
            source  of  DDN  documents and the complete Internet Request
            For Comments (RFC) series and index.

            The NIC maintains a toll-free hotline from 6 a.m. to 5  p.m.
            _________________________
            The information in this section is provided  in  accor-
            dance  with the copyright notice appearing at the front
            of this guide.




            May 23, 1990                NNSC        Section 6.2,  Page 1








            Pacific time at 1-800-235-3155  or  (415)  859-3695.   Users
            experiencing  problems  with TAC login, or who have requests
            for NIC services, are encouraged to call.

            The NIC has numerous publically accessible information files
            available in the following public directories:

            o+    NETINFO:

            o+    RFC:  PROTOCOLS:

            o+    SCC:

            o+    IEN:

            o+    DDN-NEWS:

            Each directory  has  an  index.   Files  are  available  for
            anonymous  FTP  and,  in  most cases, are accessible via the
            automatic mail server <SERVICE@NIC.DDN.MIL>.

            The NIC shadows IETF information in the publically  accessi-
            ble IETF: and INTERNET-DRAFTS: directories.

            _N_e_t_w_o_r_k _A_c_c_e_s_s


            o+    FTP to <NIC.DDN.MIL> (<192.67.67.20>) to  retrieve  NIC
                 files.

            o+    Telnet to <NIC.DDN.MIL> to use  servers  or  run  WHOIS
                 program.

            o+    Send mail to <SERVICE@NIC.DDN.MIL> to receive  informa-
                 tion via the mail server.

            o+    User Kermit server to retrieve NIC files

            _W_h_o _C_a_n _U_s_e _t_h_e _R_e_s_o_u_r_c_e

            All services are available to users of the DDN.   Many  ser-
            vices  are available to DARPA Internet users.  Some services
            are available via electronic mail to users of networks  that
            gateway to the Internet.

            _M_i_s_c_e_l_l_a_n_e_o_u_s _I_n_f_o_r_m_a_t_i_o_n

            NIC role mailboxes for further assistance:



            May 23, 1990                NNSC        Section 6.2,  Page 2








            NIC@NIC.DDN.MIL           General user assistance and document requests
            REGISTRAR@NIC.DDN.MIL     User registration and WHOIS updates
            HOSTMASTER@NIC.DDN.MIL    Host, domain, network changes and updates
            SCC@NIC.DDN.MIL           DDN network security information
            ACTION@NIC.DDN.MIL        NIC computer operations
            SUGGESTIONS@NIC.DDN.MIL   Comments on NIC services and  publications
            SERVICE@NIC.DDN.MIL       Automatic mail service












































            May 23, 1990                NNSC        Section 6.2,  Page 3


