The Cidr Report

Fri Feb 28 11:00:01 UTC 2003

This report has been generated at Fri Feb 28 21:46:34 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
        21-02-03    119400       85542
        22-02-03    119615       85397
        23-02-03    119379       85455
        24-02-03    119479       85425
        25-02-03    119470       85630
        26-02-03    119690       85676
        27-02-03    119740       85694
        28-02-03    119708       85768

AS Summary
         14678  Number of ASes in routing system
          5782  Number of ASes announcing only one prefix
          1604  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').

 --- 28Feb03 ---
ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

Table     119861    85734    34127    28.5%   All ASes

AS3908      1084      568      516    47.6%   SUPERNETASBLK SuperNet, Inc.
AS18566      491        8      483    98.4%   COVAD Covad Communications
AS701       1604     1151      453    28.2%   ALTERNET-AS UUNET
                                               Technologies, Inc.
AS4151       532      105      427    80.3%   USDA-1 USDA
AS4323       533      169      364    68.3%   TW-COMM Time Warner
                                               Communications, Inc.
AS7018      1385     1025      360    26.0%   ATT-INTERNET4 AT&T WorldNet
                                               Services
AS7843       556      224      332    59.7%   ADELPHIA-AS Adelphia Corp.
AS6197       485      157      328    67.6%   BATI-ATL BellSouth Network
                                               Solutions, Inc
AS7046       559      244      315    56.4%   UUNET-CUSTOMER UUNET
                                               Technologies, Inc.
AS1221      1121      816      305    27.2%   ASN-TELSTRA Telstra Pty Ltd
AS1239       969      686      283    29.2%   SPRINTLINK Sprint
AS4355       402      119      283    70.4%   ERMS-EARTHLNK EARTHLINK, INC
AS22927      295       14      281    95.3%   AR-TEAR2-LACNIC TELEFONICA DE
                                               ARGENTINA
AS705        450      196      254    56.4%   ASN-ALTERNET UUNET
                                               Technologies, Inc.
AS4814       264       15      249    94.3%   CHINANET-BEIJING-AP China
                                               Telecom (Group)
AS6198       439      205      234    53.3%   BATI-MIA BellSouth Network
                                               Solutions, Inc
AS1          662      435      227    34.3%   GNTY-1 Genuity
AS22291      243       31      212    87.2%   CHARTER-LA Charter
                                               Communications
AS17676      230       26      204    88.7%   GIGAINFRA XTAGE CORPORATION
AS6347       369      168      201    54.5%   DIAMOND SAVVIS Communications
                                               Corporation
AS2386       478      283      195    40.8%   INS-AS AT&T Data
                                               Communications Services
AS209        528      337      191    36.2%   ASN-QWEST Qwest
AS4134       304      113      191    62.8%   CHINANET-BACKBONE
                                               No.31,Jin-rong Street
AS690        498      308      190    38.2%   MERIT-AS-27 Merit Network Inc.
AS2048       258       87      171    66.3%   LANET-1 State of Louisiana
AS852        599      444      155    25.9%   ASN852 Telus Advanced
                                               Communications
AS7303       240       90      150    62.5%   AR-TAST-LACNIC Telecom
                                               Argentina Stet-France Telecom
                                               S.A.
AS22773      182       32      150    82.4%   CCINET-2 Cox Communications
                                               Inc. Atlanta
AS6140       285      136      149    52.3%   IMPSAT-USA ImpSat
AS6327       187       41      146    78.1%   SHAWFIBER Shaw Fiberlink
                                               Limited

Total      16232     8233     7999    49.3%   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 apops.net
  routing-wg at ripe.net
  afnog at afnog.org