资料来源 : Free On-Line Dictionary of Computing

assigned numbers
     
         The {RFC} {STD 2} documenting the currently
        assigned values from several series of numbers used in network
        {protocol} implementations.  This RFC is updated periodically
        and, in any case, current information can be obtained from the
        {Internet Assigned Numbers Authority} (IANA).  If you are
        developing a protocol or application that will require the use
        of a link, {socket}, {port}, protocol, etc., you should
        contact the IANA to receive a number assignment.
     
        (1996-08-19)