The Cidr Report

This report has been generated at Fri Feb 21 21:46:27 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
        14-02-03    119071       85433
        15-02-03    119072       85385
        16-02-03    118946       85348
        17-02-03    118884       85299
        18-02-03    118939       85352
        19-02-03    119053       85338
        20-02-03    119156       85478
        21-02-03    119400       85502


AS Summary
         14614  Number of ASes in routing system
          5749  Number of ASes announcing only one prefix
          1577  Largest number of prefixes announced by an AS
                AS701  : ALTERNET-AS UUNET Technologies, Inc.
      73048064  Largest address span announced by an AS (/32s)
                AS568  : SUMNET-AS DISO-UNRRA

Possible Bogus Routes

        10.0.0.0/8           AS4637  REACH Reach Network Border AS
        192.168.0.0/16       AS4637  REACH Reach Network Border AS


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').

 --- 21Feb03 ---
ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

Table     119491    85471    34020    28.5%   All ASes

AS3908      1062      565      497    46.8%   SUPERNETASBLK SuperNet, Inc.
AS18566      482        6      476    98.8%   COVAD Covad Communications
AS701       1577     1145      432    27.4%   ALTERNET-AS UUNET
                                               Technologies, Inc.
AS4151       524       92      432    82.4%   USDA-1 USDA
AS7018      1427     1034      393    27.5%   ATT-INTERNET4 AT&T WorldNet
                                               Services
AS4323       529      170      359    67.9%   TW-COMM Time Warner
                                               Communications, Inc.
AS7843       569      234      335    58.9%   ADELPHIA-AS Adelphia Corp.
AS7046       578      246      332    57.4%   UUNET-CUSTOMER UUNET
                                               Technologies, Inc.
AS6197       478      158      320    66.9%   BATI-ATL BellSouth Network
                                               Solutions, Inc
AS1221      1119      821      298    26.6%   ASN-TELSTRA Telstra Pty Ltd
AS4355       402      120      282    70.1%   ERMS-EARTHLNK EARTHLINK, INC
AS22927      295       14      281    95.3%   AR-TEAR2-LACNIC TELEFONICA DE
                                               ARGENTINA
AS1239       960      680      280    29.2%   SPRINTLINK Sprint
AS705        447      194      253    56.6%   ASN-ALTERNET UUNET
                                               Technologies, Inc.
AS4814       261       15      246    94.3%   CHINANET-BEIJING-AP China
                                               Telecom (Group)
AS1          666      435      231    34.7%   GNTY-1 Genuity
AS6347       330      101      229    69.4%   DIAMOND SAVVIS Communications
                                               Corporation
AS6198       433      204      229    52.9%   BATI-MIA BellSouth Network
                                               Solutions, Inc
AS22291      243       32      211    86.8%   CHARTER-LA Charter
                                               Communications
AS17676      227       26      201    88.5%   GIGAINFRA XTAGE CORPORATION
AS690        498      308      190    38.2%   MERIT-AS-27 Merit Network Inc.
AS209        523      335      188    35.9%   ASN-QWEST Qwest
AS4134       304      117      187    61.5%   CHINANET-BACKBONE
                                               No.31,Jin-rong Street
AS2386       443      263      180    40.6%   INS-AS AT&T Data
                                               Communications Services
AS2048       260       87      173    66.5%   LANET-1 State of Louisiana
AS852        604      445      159    26.3%   ASN852 Telus Advanced
                                               Communications
AS7303       240       90      150    62.5%   AR-TAST-LACNIC Telecom
                                               Argentina Stet-France Telecom
                                               S.A.
AS17557      340      190      150    44.1%   PKTELECOM-AS-AP Pakistan
                                               Telecom
AS22773      181       31      150    82.9%   CCINET-2 Cox Communications
                                               Inc. Atlanta
AS6140       283      137      146    51.6%   IMPSAT-USA ImpSat

Total      16285     8295     7990    49.1%   Top 30 total



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

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