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The Cidr Report

  • From: cidr-report
  • Date: Fri Sep 20 08:03:08 2002

This report has been generated at Mon Sep 16 18:33:13 2002 AEST.
The report analyses the BGP Routing Table of the Route-Views router
and generates a report on aggregation potential within the table.

Check http://bgp.potaroo.net/cidr for a current version of this report.

Recent Table History
        Date      Prefixes    CIDR Agg
        09-09-02    121168       88703
        10-09-02    121129       88787
        11-09-02    121290       88946
        12-09-02    121145       87146
        13-09-02    121338       87745
        14-09-02    121318       87720
        15-09-02    121238       87859
        16-09-02    122134       87830

Possible Bogus Routes

        39.0.0.0/8           AS4554  EP0-BLK-ASNBLOCK-4 Exchange Point Blocks


AS Summary
         13914  Number of ASes in routing system
          5301  Number of ASes announcing only one prefix
          1804  Largest number of prefixes announced by an AS
                AS209  : ASN-QWEST Qwest
      73154816  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 not
proposed across non-advertised address space ('holes').

 --- 16Sep02 ---
ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

Table     121976    88656    33320    27.3%   All ASes

AS209       1804     1042      762    42.2%   ASN-QWEST Qwest
AS3908      1133      650      483    42.6%   SUPERNETASBLK SuperNet, Inc.
AS2548      1581     1127      454    28.7%   ICIX-MD-AS Business Internet,
                                               Inc.
AS7132       601      183      418    69.6%   SBIS-AS Southwestern Bell
                                               Internet Services
AS701       1762     1351      411    23.3%   ALTERNET-AS UUNET
                                               Technologies, Inc.
AS7018      1349      959      390    28.9%   ATT-INTERNET4 AT&T WorldNet
                                               Services
AS1221      1301      939      362    27.8%   ASN-TELSTRA Telstra Pty Ltd
AS4323       645      307      338    52.4%   TW-COMM Time Warner
                                               Communications, Inc.
AS7046       607      312      295    48.6%   UUNET-CUSTOMER UUNET
                                               Technologies, Inc.
AS6197       383       97      286    74.7%   BATI-ATL BellSouth Network
                                               Solutions, Inc
AS852        737      456      281    38.1%   ASN852 Telus Advanced
                                               Communications
AS7843       664      386      278    41.9%   ADELPHIA-AS Adelphia Corp.
AS18566      270        4      266    98.5%   COVAD Covad Communications
AS4151       284       32      252    88.7%   USDA-1 USDA
AS1          682      449      233    34.2%   GNTY-1 Genuity
AS6347       396      180      216    54.5%   DIAMOND SAVVIS Communications
                                               Corporation
AS4814       233       34      199    85.4%   CHINANET-BEIJING-AP China
                                               Telecom (Group)Beijing
                                               Telecom CompanyBeijing China
AS690        519      326      193    37.2%   NSFNET-T3-RT-AS Merit Network
                                               Inc.
AS4355       360      170      190    52.8%   ERMS-EARTHLNK EARTHLINK, INC
AS1239       851      662      189    22.2%   SprintLink Sprint
AS2386       418      233      185    44.3%   INS-AS AT&T Data
                                               Communications Services
AS4134       302      118      184    60.9%   ERX-CHINALINK Data
                                               Communications Bureau
AS6595       244       74      170    69.7%   DODDSEUR DoD Education
                                               Activity Network Assistance
                                               Center
AS3356       392      226      166    42.3%   LEVEL3 Level 3 Communications,
                                               LLC
AS1791       186       23      163    87.6%   SPRINTLINK3 Sprint Government
                                               Systems Division
AS11371      169        7      162    95.9%   UUNET-AS-11371 UUNET
                                               Technologies, Inc.
AS376        341      184      157    46.0%   RISQ-AS Reseau
                                               Interordinateurs Scientique
                                               Quebecois (RISQ)
AS17676      220       65      155    70.5%   GIGAINFRA APNIC ASN block
AS6539       350      200      150    42.9%   GROUPTLCOM GT Group Telecom
                                               Services Corp.
AS577        424      275      149    35.1%   BACOM Bell Advanced
                                               Communications Inc.

Total      19208    11071     8137    42.4%   Top 30 total



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

------------------------------------
Copies of this report are mailed to:
  nanog@merit.edu
  eof-list@ripe.net
  apops@lists.apnic.net
  routing-wg@ripe.net
  afnog@afnog.org




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