The Cidr Report

Fri Nov 15 11:00:00 UTC 2002

This report has been generated at Fri Nov 15 21:51:38 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
        08-11-02    115262       82970
        09-11-02    115386       83004
        10-11-02    115366       82989
        11-11-02    115336       83068
        12-11-02    115307       83083
        13-11-02    115426       83148
        14-11-02    115439       83284
        15-11-02    115525       83493

AS Summary
         14038  Number of ASes in routing system
          5503  Number of ASes announcing only one prefix
          1706  Largest number of prefixes announced by an AS
                AS701  : ALTERNET-AS UUNET Technologies, Inc.
      73007104  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').

 --- 15Nov02 ---
ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

Table     115835    83543    32292    27.9%   All ASes

AS3908      1083      559      524    48.4%   SUPERNETASBLK SuperNet, Inc.
AS701       1706     1251      455    26.7%   ALTERNET-AS UUNET
                                               Technologies, Inc.
AS7843       744      299      445    59.8%   ADELPHIA-AS Adelphia Corp.
AS7018      1367     1003      364    26.6%   ATT-INTERNET4 AT&T WorldNet
                                               Services
AS6197       458      108      350    76.4%   BATI-ATL BellSouth Network
                                               Solutions, Inc
AS18566      354        6      348    98.3%   COVAD Covad Communications
AS4323       523      183      340    65.0%   TW-COMM Time Warner
                                               Communications, Inc.
AS1221      1190      865      325    27.3%   ASN-TELSTRA Telstra Pty Ltd
AS7046       589      303      286    48.6%   UUNET-CUSTOMER UUNET
                                               Technologies, Inc.
AS6347       358       81      277    77.4%   DIAMOND SAVVIS Communications
                                               Corporation
AS4355       402      135      267    66.4%   ERMS-EARTHLNK EARTHLINK, INC
AS1239       900      659      241    26.8%   SPRINTLINK Sprint
AS852        710      469      241    33.9%   ASN852 Telus Advanced
                                               Communications
AS4151       343      106      237    69.1%   USDA-1 USDA
AS22927      283       48      235    83.0%   AR-TEAR2-LACNIC TELEFONICA DE
                                               ARGENTINA
AS705        437      203      234    53.5%   ASN-ALTERNET UUNET
                                               Technologies, Inc.
AS209        564      331      233    41.3%   ASN-QWEST Qwest
AS6198       409      179      230    56.2%   BATI-MIA BellSouth Network
                                               Solutions, Inc
AS4814       234       15      219    93.6%   CHINANET-BEIJING-AP China
                                               Telecom (Group)Beijing
                                               Telecom CompanyBeijing China
AS1          658      441      217    33.0%   GNTY-1 Genuity
AS6140       268       67      201    75.0%   IMPSAT-USA ImpSat USA, Inc.
AS17676      227       30      197    86.8%   GIGAINFRA APNIC ASN block
AS6595       248       57      191    77.0%   DODDSEUR DoD Education
                                               Activity Network Assistance
                                               Center
AS17557      310      122      188    60.6%   PKTELECOM-AS-AP APNIC ASN
                                               block
AS4134       297      114      183    61.6%   ERX-CHINALINK Data
                                               Communications Bureau
AS690        506      327      179    35.4%   MERIT-AS-27 Merit Network Inc.
AS2048       263       87      176    66.9%   LANET-1 State of Louisiana
AS7132       232       67      165    71.1%   SBIS-AS Southwestern Bell
                                               Internet Services
AS174        295      136      159    53.9%   PSINET PSINet Inc.
AS2548       401      243      158    39.4%   ICIX-MD-AS Business Internet,
                                               Inc.

Total      16359     8494     7865    48.1%   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
  apops at lists.apnic.net
  routing-wg at ripe.net
  afnog at afnog.org