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The Cidr Report

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  • Date: Fri, 21 Mar 2003 22:00:01 +1100 (EST)
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This report has been generated at Fri Mar 21 21:46:30 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
        14-03-03    120659       86373
        15-03-03    120724       85975
        16-03-03    120525       85886
        17-03-03    120567       85987
        18-03-03    120637       86171
        19-03-03    120704       86222
        20-03-03    120817       86331
        21-03-03    120815       86377


AS Summary
         14780  Number of ASes in routing system
          5842  Number of ASes announcing only one prefix
          1555  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


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').

 --- 21Mar03 ---
ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

Table     120844    86356    34488    28.5%   All ASes

AS3908      1097      536      561    51.1%   SUPERNETASBLK SuperNet, Inc.
AS18566      505       13      492    97.4%   COVAD Covad Communications
AS4151       545      108      437    80.2%   USDA-1 USDA
AS701       1555     1126      429    27.6%   ALTERNET-AS UUNET
                                               Technologies, Inc.
AS7843       614      214      400    65.1%   ADELPHIA-AS Adelphia Corp.
AS4323       555      173      382    68.8%   TW-COMM Time Warner
                                               Communications, Inc.
AS7018      1353      982      371    27.4%   ATT-INTERNET4 AT&T WorldNet
                                               Services
AS1221      1104      808      296    26.8%   ASN-TELSTRA Telstra Pty Ltd
AS22927      295       14      281    95.3%   AR-TEAR2-LACNIC TELEFONICA DE
                                               ARGENTINA
AS1239       972      692      280    28.8%   SPRINTLINK Sprint
AS1          705      430      275    39.0%   GNTY-1 Genuity
AS6197       475      202      273    57.5%   BATI-ATL BellSouth Network
                                               Solutions, Inc
AS4355       385      119      266    69.1%   ERMS-EARTHLNK EARTHLINK, INC
AS6198       448      183      265    59.2%   BATI-MIA BellSouth Network
                                               Solutions, Inc
AS705        457      203      254    55.6%   ASN-ALTERNET UUNET
                                               Technologies, Inc.
AS4814       264       15      249    94.3%   CHINANET-BEIJING-AP China
                                               Telecom (Group)
AS2386       496      275      221    44.6%   INS-AS AT&T Data
                                               Communications Services
AS27364      278       69      209    75.2%   ACS-INTERNET Armstrong Cable
                                               Services
AS17676      233       29      204    87.6%   GIGAINFRA XTAGE CORPORATION
AS22291      243       48      195    80.2%   CHARTER-LA Charter
                                               Communications
AS4134       310      119      191    61.6%   CHINANET-BACKBONE
                                               No.31,Jin-rong Street
AS209        531      341      190    35.8%   ASN-QWEST Qwest
AS690        504      314      190    37.7%   MERIT-AS-27 Merit Network Inc.
AS6347       370      194      176    47.6%   DIAMOND SAVVIS Communications
                                               Corporation
AS3561       517      342      175    33.8%   CWUSA Cable & Wireless USA
AS2048       259       87      172    66.4%   LANET-1 State of Louisiana
AS17557      374      211      163    43.6%   PKTELECOM-AS-AP Pakistan
                                               Telecom
AS22773      191       32      159    83.2%   CCINET-2 Cox Communications
                                               Inc. Atlanta
AS7303       242       89      153    63.2%   AR-TAST-LACNIC Telecom
                                               Argentina Stet-France Telecom
                                               S.A.
AS8372       182       30      152    83.5%   COLT-UK-AS  COLT Internet UK
                                               Access Network.

Total      16059     7998     8061    50.2%   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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