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The Cidr Report

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  • Date: Fri, 4 Apr 2003 22:00:00 +1000 (EST)
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This report has been generated at Fri Apr  4 21:45:29 2003 AEST.
The report analyses the BGP Routing Table of an AS4637 (Reach) router
and generates a report on aggregation potential within the table.

Check http://www.cidr-report.org/as4637 for a current version of this report.

Recent Table History
        Date      Prefixes    CIDR Agg
        29-03-03    121022       86344
        30-03-03    121098       86444
        30-03-03    121192       86322
        31-03-03    121111       86222
        01-04-03    121043       86425
        02-04-03    121298       86692
        03-04-03    121290       86674
        04-04-03    121205       86508


AS Summary
         14872  Number of ASes in routing system
          5874  Number of ASes announcing only one prefix
          1557  Largest number of prefixes announced by an AS
                AS701  : ALTERNET-AS UUNET Technologies, Inc.
      73080832  Largest address span announced by an AS (/32s)
                AS568  : SUMNET-AS DISO-UNRRA


Aggregation Summary
The algorithm used in this report proposes aggregation only
when there is a precise match using the AS path, so as 
to preserve traffic transit policies. Aggregation is also
proposed across non-advertised address space ('holes').

 --- 04Apr03 ---
ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

Table     121023    86497    34526    28.5%   All ASes

AS4151       612       75      537    87.7%   USDA-1 USDA
AS18566      516       12      504    97.7%   COVAD Covad Communications
AS701       1557     1113      444    28.5%   ALTERNET-AS UUNET
                                               Technologies, Inc.
AS7843       621      189      432    69.6%   ADELPHIA-AS Adelphia Corp.
AS3908       956      529      427    44.7%   SUPERNETASBLK SuperNet, Inc.
AS7018      1349      958      391    29.0%   ATT-INTERNET4 AT&T WorldNet
                                               Services
AS4323       565      181      384    68.0%   TW-COMM Time Warner
                                               Communications, Inc.
AS7132       727      409      318    43.7%   SBIS-AS SBC Internet Services
                                               - Southwest
AS1221      1108      811      297    26.8%   ASN-TELSTRA Telstra Pty Ltd
AS1239       960      679      281    29.3%   SPRINTLINK Sprint
AS22927      295       14      281    95.3%   AR-TEAR2-LACNIC TELEFONICA DE
                                               ARGENTINA
AS6198       460      185      275    59.8%   BATI-MIA BellSouth Network
                                               Solutions, Inc
AS6197       475      202      273    57.5%   BATI-ATL BellSouth Network
                                               Solutions, Inc
AS4355       380      110      270    71.1%   ERMS-EARTHLNK EARTHLINK, INC
AS705        459      203      256    55.8%   ALTERNET-AS UUNET
                                               Technologies, Inc.
AS4814       269       15      254    94.4%   CHINANET-BEIJING-AP China
                                               Telecom (Group)
AS2386       499      277      222    44.5%   INS-AS AT&T Data
                                               Communications Services
AS17676      235       28      207    88.1%   GIGAINFRA XTAGE CORPORATION
AS27364      266       65      201    75.6%   ACS-INTERNET Armstrong Cable
                                               Services
AS11305      340      146      194    57.1%   INTERLAND-NET1 Interland
                                               Incorporated
AS22773      202        8      194    96.0%   CCINET-2 Cox Communications
                                               Inc. Atlanta
AS209        523      337      186    35.6%   ASN-QWEST Qwest
AS690        502      318      184    36.7%   MERIT-AS-27 Merit Network Inc.
AS22291      240       60      180    75.0%   CHARTER-LA Charter
                                               Communications
AS3561       515      338      177    34.4%   CWUSA Cable & Wireless USA
AS2048       258       87      171    66.3%   LANET-1 State of Louisiana
AS6347       368      201      167    45.4%   DIAMOND SAVVIS Communications
                                               Corporation
AS1          639      483      156    24.4%   GNTY-1 Genuity
AS6327       190       34      156    82.1%   SHAWFIBER Shaw Fiberlink
                                               Limited
AS6140       295      152      143    48.5%   IMPSAT-USA ImpSat

Total      16381     8219     8162    49.8%   Top 30 total



Please see http://www.cidr-report.org for the full report

------------------------------------
Copies of this report are mailed to:
  nanog@localhost
  eof-list@localhost
  apops@localhost
  routing-wg@localhost
  afnog@localhost




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