Top-50 Report

Tony Bates tbates at cisco.com
Sat Sep 14 01:59:14 UTC 1996


This is a list of the "Top 50" players who if CIDRizing at the AS level
could make a significant gain in the reduction of the size of Internet
routing tables. This may be an over-estimation but it is hoped that
this  can act as an incentive for the "Top 50" and others to look at 
their CIDR capability. This is a revival of report that used to be
posted in the early days of CIDR deployment (we even had a cidrd list
and working group then).

This looks purely at the classful routes in the system and shows what gain if
cidrizing at the AS-level could be made by forming an aggregate.

			--Tony

P.S. Same caveat about AS name mappings not working quite right yet.
P.P.S. Unless there are loud objections I plan to automate this again soon.

ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS560       1697      877      820   48.3%   BBN Planet, New England Region (N
AS174       1295      938      357   27.6%   Performance Systems International
AS2493       728      456      272   37.4%   FONOROLA-EAST
AS3602       546      313      233   42.7%   Intergrated Network Services Inc.
AS1          462      293      169   36.6%   BBN Planet backbone
AS3397       255       94      161   63.1%   EMI-AS
AS3804       384      241      143   37.2%   WorldLinx 3
AS1691       294      156      138   46.9%   UNKNOWN
AS86         293      183      110   37.5%   SURAnet Northern AS
AS568        375      265      110   29.3%   JIS (Joint Interconnection Servic
AS2386       235      140       95   40.4%   INS-AS
AS2704       271      182       89   32.8%   HOOKUP-NET-A
AS1717       451      362       89   19.7%   RENATER
AS721        348      267       81   23.3%   UNKNOWN
AS2900       207      126       81   39.1%   Westnet Arizona (ASU)
AS3215       127       53       74   58.3%   RAIN
AS3301       344      277       67   19.5%   TeliaNet Sweden
AS813        215      151       64   29.8%   UUNET Canada (ASN-UUNETCA-AS1)
AS701        868      809       59    6.8%   Alternet
AS2711       108       49       59   54.6%   SUNBELT-AS
AS1790       261      205       56   21.5%   SprintLink Washington D.C.
AS839         90       35       55   61.1%   North West Territories Regional N
AS3819        78       23       55   70.5%   SIGNET
AS855        119       66       53   44.5%   NBTel
AS225        109       67       42   38.5%   University of Virginia (VIRnet)
AS549        204      163       41   20.1%   ONet Backbone
AS3824        63       23       40   63.5%   UNKNOWN
AS3132        72       32       40   55.6%   Red Cientifica Peruana (ASN-RCP)
AS3566        64       25       39   60.9%   UNKNOWN
AS4983        62       25       37   59.7%   Intel Corporation Autonomous Syst
AS1785       220      183       37   16.8%   NYSERNet Backbone
AS6059        53       17       36   67.9%   UNKNOWN
AS3561       848      812       36    4.2%   MCI
AS97         135      101       34   25.2%   JvNCnet
AS852        129       95       34   26.4%   AGT Advance Communication
AS2044       112       78       34   30.4%   WORLDNET-AS
AS719        392      359       33    8.4%   LANLINK autonomous system
AS600        199      166       33   16.6%   OARnet AS
AS4175       411      378       33    8.0%   UNKNOWN
AS279        210      177       33   15.7%   SURAnet Southern AS
AS271         90       57       33   36.7%   BCnet Backbone
AS4200       155      123       32   20.6%   AGIS (Apex Global Information Ser
AS1706        66       34       32   48.5%   University of Arizona
AS3799        53       23       30   56.6%   IDS
AS3603        63       33       30   47.6%   CETCOL - Uniandes
AS3354       118       88       30   25.4%   THENET-AS-1
AS1791       109       80       29   26.6%   SprintLink Fort Worth TX
AS4361        42       14       28   66.7%   UNKNOWN
AS4230        76       48       28   36.8%   Embratel Brazil
AS262        100       72       28   28.0%   UNKNOWN
AS2551       321      293       28    8.7%   NETCOM On-line Communication Serv






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