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+Network Working Group                                   M.D. Kudlick
+RFC # 608                                               SRI-ARC
+NIC # 21256                                             January 10, 1974
+
+
+                           HOST NAMES ON-LINE
+
+
+We at the NIC agree with Peter Deutsch's suggestion (in RFC# 606 / NIC#
+21246) that the NIC maintain an online ASCII text file of Host names,
+addresses, and attributes.  That suggestion corresponds to one made by
+Vint Cerf recently, and evidently receives ARPA/IPT support.
+
+Jake Feinler at the NIC designed and maintains a source file, in NLS
+format, that can be used to generate the ASCII file Peter outlined.  A
+program to generate an up to date version of the ASCII file needs to be
+written at the NIC, and run periodically (weekly, or as the situation
+warrants).  Such a mechanism would allow us, of course, to maintain one
+source of data and use it for this and other purposes.
+
+Our present data includes official Host name, Host address, Host status
+(user, server, TIP) and certain other information like Technical
+Liaison, Host computer, operating system, etc.
+
+Provisions exist for including attributes of the type Peter suggested
+(for example FTP byte size, TELNET duplex mode, echoing mode, and
+nicknames), but these data are currently NOT in our source file.
+
+
+To get things moving, therefore, we propose to do the following things:
+
+    1)  We shall write a program to generate the ASCII file in the
+        syntax described in RFC# 606, namely:
+
+        <host-name-file> ::= <entry> / <host-name-file> <entry>
+
+        <entry> ::= <data-part> <end-of-line>
+
+            Note that this produces a blank line after the <data-part>.
+
+        <data-part> ::= <basic-part> / <data-part> <attribute-item>
+
+        <basic-part> ::= <host-name> , <host-address> <end-of-line>
+
+        <attribute-item> ::= <attribute-name> = <attribute-value> <end-
+        of-line>
+
+
+
+
+
+Kudlick                                                         [Page 1]
+
+RFC 608                    Host Names On-Line               January 1974
+
+
+    2)  We shall initially include only the following items in each
+        <entry>:
+
+        a)  <basic-part>
+
+            in which <host-address> will be a decimal host address,
+            relative to the Host's own Network, and
+
+            in which <host-name> will be the official Host Name, a
+            string obtained through negotiation between the Host and the
+            NIC, governed by these constraints:
+
+                up to 48 characters drawn from the alphabet (A-Z),
+                digits (0-9), and the minus sign (-) ... specifically,
+                no blank or space characters allowed;
+
+                no distinction between upper and lower case letters;
+
+                the first character is a letter;
+
+                the last character is NOT a minus sign;
+
+                no other restrictions on content or syntax.
+
+            Note:  The Host Name may be prefixed with an Official
+            Network Name of up to 24 characters enclosed in parentheses
+            ().  The Network Name designates the Network in which the
+            Host resides.
+
+                (The characters used in the Network Name are drawn from
+                the same character set as those in the Host Name, with
+                the same constraints [except the length] as listed
+                above.)
+
+                The ASCII text file will only contain the Official
+                Network name for Hosts NOT on the ARPANET; for ARPANET
+                Hosts there will be no Network Name prefix.
+
+        b)  <attribute-item>
+
+            in which <attribute-name> initially will have the single
+            possible value STATUS, and the corresponding value of
+            <attribute-value> for STATUS will be one of these:
+
+                SERVER
+                USER
+                TIP
+                UNKNOWN
+
+
+
+Kudlick                                                         [Page 2]
+
+RFC 608                    Host Names On-Line               January 1974
+
+
+        c)  <end-of-line>
+
+            this will be carriage return followed by line feed (octal
+            015  followed by  octal  12).
+
+    3)  Attributes other than those for which <attribute-name> is STATUS
+        will be added in the above format at a later date (to be
+        announced) as the data becomes available to us.
+
+        We agree with Peter that the attribute list should not be
+        construed as replacing option negotiation or any other means by
+        which one Host discovers the properties of another, but merely
+        as an alternative source of information that is simply and
+        easily accessible, in machine-readable form.
+
+        Suggestions for attributes that are worthy of inclusion in the
+        ASCII file of Hostnames are welcome.  Please send your
+        suggestions and/or data to Jake Feinler
+            FEINLER @ SRI-ARC,   or  NIC Ident  =  JAKE
+
+        For completeness, we record here the attribute suggestions given
+        in RFC# 606:
+
+            NICKNAMES -- value is a list of acceptable nicknames for the
+            host.  Any system that provides name-to-address translation
+            is encouraged (although of course not required) to accept
+            these names as alternatives to the official host name.
+
+            FTP-BYTE-SIZES -- value is a list of the byte sizes
+            supported by the FTP server.  The first byte size is the one
+            which leads to the least computational overhead (e.g. 36 for
+            PDP-10's, 32 for 360's).
+
+            ECHOING -- value is L or R depending on whether the host
+            expects the terminal to echo (Remote) or expects to do its
+            own echoing (Local).
+
+The ASCII file generated by the NIC will reside at Host OFFICE-1 (Host
+Address = 43 decimal), and will have the pathname
+
+    <NETINFO>HOSTS.TXT
+
+Using this pathname with an FTP process will enable anyone, of course,
+to retrieve the file for use at any Network Host.
+
+    The login username for FTP can be GUEST,
+    password ARPA,
+    account 1.
+
+
+
+Kudlick                                                         [Page 3]
+
+RFC 608                    Host Names On-Line               January 1974
+
+
+The file will be in alphanumeric sequence by Host Name.
+
+The date after which the file will be available at OFFICE-l will be
+announced via RFC as soon as the file is ready.
+
+
+We welcome comments on this RFC, on RFC# 606, or on any other aspect of
+this problem.  And we wish to acknowledge the contributions of Vint
+Cerf, Peter Deutsch, Jake Feinler, and Nancy Neigus in getting the
+Official Host Name list to happen.
+
+
+
+
+
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+
+
+       [ This RFC was put into machine readable form for entry ]
+       [ into the online RFC archives by Alex McKenzie with    ]
+       [ support from GTE, formerly BBN Corp.            11/99 ]
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+Kudlick                                                         [Page 4]
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