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The Cidr Report

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  • Date: Fri, 7 Mar 2003 22:00:02 +1100 (EST)
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This report has been generated at Fri Mar  7 21:46:45 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
        28-02-03    119708       85685
        01-03-03    119794       85736
        02-03-03    119902       85774
        03-03-03    119905       85881
        04-03-03    120066       86042
        05-03-03    120121       86071
        06-03-03    120244       86209
        07-03-03    120289       86173


AS Summary
         14703  Number of ASes in routing system
          5787  Number of ASes announcing only one prefix
          1586  Largest number of prefixes announced by an AS
                AS701  : ALTERNET-AS UUNET Technologies, Inc.
      72916992  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').

 --- 07Mar03 ---
ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

Table     120335    86155    34180    28.4%   All ASes

AS3908      1085      567      518    47.7%   SUPERNETASBLK SuperNet, Inc.
AS18566      507        9      498    98.2%   COVAD Covad Communications
AS701       1586     1146      440    27.7%   ALTERNET-AS UUNET
                                               Technologies, Inc.
AS4151       532      106      426    80.1%   USDA-1 USDA
AS4323       537      170      367    68.3%   TW-COMM Time Warner
                                               Communications, Inc.
AS7843       590      232      358    60.7%   ADELPHIA-AS Adelphia Corp.
AS7018      1380     1024      356    25.8%   ATT-INTERNET4 AT&T WorldNet
                                               Services
AS6197       498      157      341    68.5%   BATI-ATL BellSouth Network
                                               Solutions, Inc
AS1221      1113      809      304    27.3%   ASN-TELSTRA Telstra Pty Ltd
AS1239       973      691      282    29.0%   SPRINTLINK Sprint
AS4355       401      120      281    70.1%   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       263       15      248    94.3%   CHINANET-BEIJING-AP China
                                               Telecom (Group)
AS6198       450      203      247    54.9%   BATI-MIA BellSouth Network
                                               Solutions, Inc
AS1          662      436      226    34.1%   GNTY-1 Genuity
AS22291      243       31      212    87.2%   CHARTER-LA Charter
                                               Communications
AS27364      240       29      211    87.9%   ACS-INTERNET Armstrong Cable
                                               Services
AS17676      230       26      204    88.7%   GIGAINFRA XTAGE CORPORATION
AS2386       483      282      201    41.6%   INS-AS AT&T Data
                                               Communications Services
AS4134       304      113      191    62.8%   CHINANET-BACKBONE
                                               No.31,Jin-rong Street
AS209        532      342      190    35.7%   ASN-QWEST Qwest
AS690        500      310      190    38.0%   MERIT-AS-27 Merit Network Inc.
AS6347       370      190      180    48.6%   DIAMOND SAVVIS Communications
                                               Corporation
AS2048       259       87      172    66.4%   LANET-1 State of Louisiana
AS17557      359      206      153    42.6%   PKTELECOM-AS-AP Pakistan
                                               Telecom
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       284      136      148    52.1%   IMPSAT-USA ImpSat
AS11492      322      174      148    46.0%   CABLEONE CABLE ONE

Total      15870     7943     7927    49.9%   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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