The Cidr Report

Fri Nov 1 11:00:00 UTC 2002

This report has been generated at Fri Nov  1 21:44:58 2002 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
        25-10-02    114752       82664
        26-10-02    115193       82582
        26-10-02    115135       82541
        28-10-02    115001       82653
        29-10-02    115335       82760
        30-10-02    115374       82790
        31-10-02    115340       82890
        01-11-02    115442       82880

AS Summary
         13957  Number of ASes in routing system
          5465  Number of ASes announcing only one prefix
          1748  Largest number of prefixes announced by an AS
                AS701  : ALTERNET-AS UUNET Technologies, Inc.
      73146368  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').

 --- 01Nov02 ---
ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

Table     115457    82891    32566    28.2%   All ASes

AS3908      1076      564      512    47.6%   SUPERNETASBLK SuperNet, Inc.
AS701       1748     1265      483    27.6%   ALTERNET-AS UUNET
                                               Technologies, Inc.
AS7843       782      330      452    57.8%   ADELPHIA-AS Adelphia Corp.
AS2828       487      112      375    77.0%   XO-AS15 XO Communications
AS6197       457      100      357    78.1%   BATI-ATL BellSouth Network
                                               Solutions, Inc
AS7018      1344      993      351    26.1%   ATT-INTERNET4 AT&T WorldNet
                                               Services
AS4323       516      181      335    64.9%   TW-COMM Time Warner
                                               Communications, Inc.
AS18566      337        4      333    98.8%   COVAD Covad Communications
AS1221      1196      873      323    27.0%   ASN-TELSTRA Telstra Pty Ltd
AS209        629      336      293    46.6%   ASN-QWEST Qwest
AS7046       585      299      286    48.9%   UUNET-CUSTOMER UUNET
                                               Technologies, Inc.
AS6347       354       82      272    76.8%   DIAMOND SAVVIS Communications
                                               Corporation
AS4355       388      127      261    67.3%   ERMS-EARTHLNK EARTHLINK, INC
AS4151       330       89      241    73.0%   USDA-1 USDA
AS705        441      202      239    54.2%   ASN-ALTERNET UUNET
                                               Technologies, Inc.
AS1239       887      662      225    25.4%   SPRINTLINK Sprint
AS6198       403      180      223    55.3%   BATI-MIA BellSouth Network
                                               Solutions, Inc
AS852        689      467      222    32.2%   ASN852 Telus Advanced
                                               Communications
AS1          655      437      218    33.3%   GNTY-1 Genuity
AS4814       233       15      218    93.6%   CHINANET-BEIJING-AP China
                                               Telecom (Group)Beijing
                                               Telecom CompanyBeijing China
AS7132       281       71      210    74.7%   SBIS-AS Southwestern Bell
                                               Internet Services
AS6140       263       65      198    75.3%   IMPSAT-USA ImpSat USA, Inc.
AS17557      320      122      198    61.9%   PKTELECOM-AS-AP APNIC ASN
                                               block
AS22927      216       20      196    90.7%   AR-TEAR2-LACNIC TELEFONICA DE
                                               ARGENTINA
AS6595       248       57      191    77.0%   DODDSEUR DoD Education
                                               Activity Network Assistance
                                               Center
AS17676      226       35      191    84.5%   GIGAINFRA APNIC ASN block
AS690        517      331      186    36.0%   MERIT-AS-27 Merit Network Inc.
AS4134       296      114      182    61.5%   ERX-CHINALINK Data
                                               Communications Bureau
AS2048       265       88      177    66.8%   LANET-1 State of Louisiana
AS2548       403      244      159    39.5%   ICIX-MD-AS Business Internet,
                                               Inc.

Total      16572     8465     8107    48.9%   Top 30 total

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

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