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The Cidr Report

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  • Date: Fri, 31 Jan 2003 22:00:00 +1100 (EST)
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This report has been generated at Fri Jan 31 21:45:39 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
        24-01-03    118201       85103
        25-01-03    118189       83778
        26-01-03    116341       84709
        27-01-03    117892       84848
        28-01-03    118004       85138
        29-01-03    118290       85119
        30-01-03    118378       85040
        31-01-03    118463       85056


AS Summary
         14479  Number of ASes in routing system
          5680  Number of ASes announcing only one prefix
          1585  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').

 --- 31Jan03 ---
ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

Table     118597    85097    33500    28.2%   All ASes

AS3908      1179      682      497    42.2%   SUPERNETASBLK SuperNet, Inc.
AS18566      450        7      443    98.4%   COVAD Covad Communications
AS701       1585     1174      411    25.9%   ALTERNET-AS UUNET
                                               Technologies, Inc.
AS7018      1427     1035      392    27.5%   ATT-INTERNET4 AT&T WorldNet
                                               Services
AS4323       527      170      357    67.7%   TW-COMM Time Warner
                                               Communications, Inc.
AS7843       584      257      327    56.0%   ADELPHIA-AS Adelphia Corp.
AS6197       471      154      317    67.3%   BATI-ATL BellSouth Network
                                               Solutions, Inc
AS1221      1136      830      306    26.9%   ASN-TELSTRA Telstra Pty Ltd
AS6347       376       85      291    77.4%   DIAMOND SAVVIS Communications
                                               Corporation
AS4355       410      126      284    69.3%   ERMS-EARTHLNK EARTHLINK, INC
AS1239       958      675      283    29.5%   SPRINTLINK Sprint
AS22927      295       14      281    95.3%   AR-TEAR2-LACNIC TELEFONICA DE
                                               ARGENTINA
AS7046       551      277      274    49.7%   UUNET-CUSTOMER UUNET
                                               Technologies, Inc.
AS4151       329       58      271    82.4%   USDA-1 USDA
AS4814       261       15      246    94.3%   CHINANET-BEIJING-AP China
                                               Telecom (Group)
AS705        435      190      245    56.3%   ASN-ALTERNET UUNET
                                               Technologies, Inc.
AS852        680      445      235    34.6%   ASN852 Telus Advanced
                                               Communications
AS1          663      435      228    34.4%   GNTY-1 Genuity
AS6198       424      202      222    52.4%   BATI-MIA BellSouth Network
                                               Solutions, Inc
AS22291      237       30      207    87.3%   CHARTER-LA Charter
                                               Communications
AS17676      220       24      196    89.1%   GIGAINFRA XTAGE CORPORATION
AS690        505      311      194    38.4%   MERIT-AS-27 Merit Network Inc.
AS209        521      333      188    36.1%   ASN-QWEST Qwest
AS4134       301      117      184    61.1%   ERX-CHINALINK Data
                                               Communications Bureau
AS2386       435      258      177    40.7%   INS-AS AT&T Data
                                               Communications Services
AS6140       306      132      174    56.9%   IMPSAT-USA ImpSat
AS2048       259       87      172    66.4%   LANET-1 State of Louisiana
AS6327       187       36      151    80.7%   SHAWFIBER Shaw Fiberlink
                                               Limited
AS17557      330      183      147    44.5%   PKTELECOM-AS-AP Pakistan
                                               Telecom
AS11492      300      157      143    47.7%   CABLEONE CABLE ONE

Total      16342     8499     7843    48.0%   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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