North American Network Operators Group

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Re: filtering long prefixes

  • From: Hans-Werner Braun
  • Date: Thu Sep 21 10:27:12 1995

Just an aside (since I just have the data handy), as of a few weeks
ago, the InterNIC data base had the following prefix counts for their
network number entries:

    PREFIX	FREQUENCY
    ==========  =========
    -536870912  1
    3       	2
    7       	1
    8       	78
    9      	12
    10      	22
    11      	23
    12      	39
    13      	50
    14      	81
    15      	47
    16     	9057
    17    	260
    18      	583
    19      	1066
    20      	1870
    21      	2197
    22     	2335
    23    	2721
    24      	64386
    31     	86

I sure am liking those 31 bit masks.