The Cidr Report

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  • Date: Fri, 13 May 2005 22:00:00 +1000 (EST)
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This report has been generated at Fri May 13 21:44:55 2005 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
        06-05-05    157716      108341
        07-05-05    157747      108272
        08-05-05    157845      108355
        09-05-05    157874      107939
        10-05-05    157991      107998
        11-05-05    158104      108225
        12-05-05    158263      108345
        13-05-05    158437      108294


AS Summary
         19548  Number of ASes in routing system
          8018  Number of ASes announcing only one prefix
          1475  Largest number of prefixes announced by an AS
                AS7018 : ATT-INTERNET4 - AT&T WorldNet Services
      90463488  Largest address span announced by an AS (/32s)
                AS721  : DLA-ASNBLOCK-AS - DoD Network Information Center


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').

 --- 13May05 ---
ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

Table     158472   108345    50127    31.6%   All ASes

AS4323      1099      221      878    79.9%   TWTC - Time Warner Telecom
AS18566      806        8      798    99.0%   COVAD - Covad Communications
AS4134       894      220      674    75.4%   CHINANET-BACKBONE
                                               No.31,Jin-rong Street
AS721       1113      562      551    49.5%   DLA-ASNBLOCK-AS - DoD Network
                                               Information Center
AS27364      565       22      543    96.1%   ACS-INTERNET - Armstrong Cable
                                               Services
AS7018      1475      941      534    36.2%   ATT-INTERNET4 - AT&T WorldNet
                                               Services
AS22773      483       23      460    95.2%   CCINET-2 - Cox Communications
                                               Inc.
AS7725       449       50      399    88.9%   CCH-AS7 - Comcast Cable
                                               Communications Holdings, Inc
AS6197       901      513      388    43.1%   BATI-ATL - BellSouth Network
                                               Solutions, Inc
AS3602       513      142      371    72.3%   SPRINT-CA-AS - Sprint Canada
                                               Inc.
AS17676      431       78      353    81.9%   JPNIC-JP-ASN-BLOCK Japan
                                               Network Information Center
AS9929       349       46      303    86.8%   CNCNET-CN China Netcom Corp.
AS4766       575      280      295    51.3%   KIXS-AS-KR Korea Telecom
AS6478       415      126      289    69.6%   ATT-INTERNET3 - AT&T WorldNet
                                               Services
AS6140       401      138      263    65.6%   IMPSAT-USA - ImpSat
AS14654      266        6      260    97.7%   WAYPORT - Wayport
AS9443       374      123      251    67.1%   INTERNETPRIMUS-AS-AP Primus
                                               Telecommunications
AS1239       893      650      243    27.2%   SPRINTLINK - Sprint
AS7545       493      252      241    48.9%   TPG-INTERNET-AP TPG Internet
                                               Pty Ltd
AS23126      254       18      236    92.9%   KMCTELCOM-DIA - KMC Telecom,
                                               Inc.
AS15270      272       38      234    86.0%   AS-PAETEC-NET - PaeTec.net -a
                                               division of
                                               PaeTecCommunications, Inc.
AS9583       733      501      232    31.7%   SIFY-AS-IN Sify Limited
AS6198       464      236      228    49.1%   BATI-MIA - BellSouth Network
                                               Solutions, Inc
AS5668       487      262      225    46.2%   AS-5668 - CenturyTel Internet
                                               Holdings, Inc.
AS2386       851      633      218    25.6%   INS-AS - AT&T Data
                                               Communications Services
AS9498       297       79      218    73.4%   BBIL-AP BHARTI BT INTERNET
                                               LTD.
AS11456      318      109      209    65.7%   NUVOX - NuVox Communications,
                                               Inc.
AS6167       264       67      197    74.6%   CELLCO-PART - Cellco
                                               Partnership
AS6517       321      128      193    60.1%   YIPESCOM - Yipes
                                               Communications, Inc.
AS812        209       21      188    90.0%   ROGERS-CABLE - Rogers Cable
                                               Inc.

Total      16965     6493    10472    61.7%   Top 30 total


Possible Bogus Routes

        172.1.0.0/16         AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.2.0.0/16         AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.3.0.0/16         AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.4.0.0/16         AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.5.0.0/16         AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.6.0.0/16         AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.7.0.0/16         AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.8.0.0/16         AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.9.0.0/16         AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.10.0.0/16        AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.11.0.0/16        AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.12.0.0/16        AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.13.0.0/16        AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.14.0.0/16        AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.15.0.0/16        AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.32.0.0/24        AS7011  CITLINK - Citizens Utilities
        172.50.0.0/16        AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.51.0.0/16        AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.52.0.0/16        AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.74.0.0/16        AS12956 TELEFONICA Telefonica Backbone Autonomous System
        172.122.28.0/24      AS210   WEST-NET-WEST - Utah Education Network
        192.30.93.0/24       AS17757 HPAUS-AP HP Australia
        192.30.94.0/24       AS17757 HPAUS-AP HP Australia
        192.40.105.0/24      AS5515  SONERA-GLOBAL-IP Sonera Solution Autonomous System
        192.43.230.0/24      AS7575  AARNET-AS-AP Australian Academic and Reasearch Network (AARNet)
        192.44.0.0/19        AS702   AS702 MCI EMEA - Commercial IP service provider in Europe
        192.44.0.0/24        AS5501  FRAUNHOFER-CLUSTER-BW Fraunhofer Gesellschaft
        192.70.164.0/24      AS25689 NRCNET-AS - National Research Council of Canada
        192.81.182.0/24      AS719   ELISA-AS Elisa Oyj
        192.81.183.0/24      AS719   ELISA-AS Elisa Oyj
        192.81.184.0/24      AS719   ELISA-AS Elisa Oyj
        192.119.135.0/24     AS270   PSCNI-AS - National Aeronautics and Space Administration
        192.124.252.0/22     AS680   DFN-IP service G-WiN
        192.133.6.0/24       AS4004  GLOBALONE-EQUANT-UK Equant UK & Greece Autonomous System
        192.135.50.0/24      AS7018  ATT-INTERNET4 - AT&T WorldNet Services
        192.136.53.0/24      AS8346  SONATEL-AS Autonomous System
        192.153.144.0/21     AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        192.172.0.0/19       AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        192.188.208.0/20     AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        192.200.100.0/24     AS7018  ATT-INTERNET4 - AT&T WorldNet Services
        196.2.95.0/24        AS8668  TELONE-AS TelOne Zimbabwe P/L
        196.3.162.0/24       AS6083  AFRINIC African Network Information Center
        198.23.26.0/24       AS4390  BELLATLANTIC-COM - Bell Atlantic, Inc.
        198.97.72.0/21       AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        198.97.80.0/20       AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        198.97.88.0/24       AS89    NUSC-CSTLNET-AS - Naval Underwater Systems Center
        198.97.240.0/20      AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        198.97.247.0/24      AS3475  LANT-AFLOAT - Department of the Navy
        198.101.4.0/22       AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        198.136.32.0/20      AS19329 MCNET - Martin County Board of County Commissioners
        198.144.32.0/19      AS3998  CITY-NET - CityNet, Inc.
        198.160.171.0/24     AS7046  UUNET-CUSTOMER - UUNET Technologies, Inc.
        198.161.87.0/24      AS6539  GROUPTLCOM - GT Group Telecom Services Corp.
        198.163.155.0/24     AS684   MBNET-AS - Manitoba Regional Network
        198.167.0.0/16       AS7456  INTERHOP - Interhop Network SERVICES Inc.
        198.167.163.0/24     AS15290 ALLST-15290 - Allstream Corp. Corporation Allstream
        198.168.0.0/16       AS701   ALTERNET-AS - UUNET Technologies, Inc.
        198.169.0.0/16       AS803   SASKTEL - SaskTel
        198.232.133.0/24     AS23075 SKOTOS-AS - Skotos Tech, Inc
        199.9.128.0/17       AS668   ASN-ASNET-NET-AS - Defense Research and Engineering Network
        199.10.0.0/16        AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        199.60.0.0/20        AS271   BCNET-AS - University of British Columbia
        199.96.44.0/23       AS19092 360NETWORKS-US - 360Networks (USA) Inc.
        199.96.46.0/24       AS19092 360NETWORKS-US - 360Networks (USA) Inc.
        199.114.0.0/21       AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        199.114.128.0/18     AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        199.114.130.0/24     AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        199.114.132.0/24     AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        199.114.134.0/24     AS3541  ITSDN-U4 - DISA/UNRRA
        199.114.136.0/24     AS27044 DDN-ASNBLK1 - DoD Network Information Center
        199.114.138.0/24     AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        199.114.140.0/24     AS3544  ITSDN-U7 - DISA/UNRRA
        199.114.142.0/24     AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        199.114.144.0/24     AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        199.114.148.0/24     AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        199.114.150.0/24     AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        199.114.152.0/24     AS27033 DDN-ASNBLK1 - DoD Network Information Center
        199.114.153.0/24     AS27034 DDN-ASNBLK1 - DoD Network Information Center
        199.114.154.0/24     AS1733  CENTAF-SWA - AF DDN PMO
        199.114.156.0/24     AS27034 DDN-ASNBLK1 - DoD Network Information Center
        199.114.160.0/24     AS1733  CENTAF-SWA - AF DDN PMO
        199.120.32.0/19      AS16582 NEXTLEVELINTERNET - NEXTLEVEL INTERNET, INC.
        199.121.0.0/16       AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        199.123.0.0/18       AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        199.123.16.0/20      AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        199.123.80.0/21      AS721   DLA-ASNBLOCK-AS - DoD Network Information Center
        199.189.32.0/19      AS7332  IQUEST-AS - IQuest Internet
        199.202.0.0/16       AS701   ALTERNET-AS - UUNET Technologies, Inc.
        202.86.252.0/22      AS4748  RESOLINK-AS Resources Linke Network Limited
        202.93.0.0/20        AS4134  CHINANET-BACKBONE No.31,Jin-rong Street
        202.164.224.0/19     AS7599  IPXC-AS-AP IP Exchange
        203.32.4.0/23        AS7617  TELEONE-HK TeleTeleOne (HK) Limited
        203.62.0.0/17        AS7572  AARNET-ACT-RNO Australian Academic and Reasearch Network (AARNet)
        203.99.0.0/19        AS17746 ORCONINTERNET-NZ-AP Orcon Internet
        203.99.142.0/24      AS9826  ILINK-HK-AP iLink.net Ltd
        203.210.69.0/24      AS17536 PRODIGY-AS-AP Prodidgy Telecommunications
        204.48.118.0/23      AS29912 CITIZENS-PROPERTY-INSURANCE-CORPORATION - Citizens Property Insurance Corporation
        204.48.119.0/24      AS29912 CITIZENS-PROPERTY-INSURANCE-CORPORATION - Citizens Property Insurance Corporation
        204.154.125.0/24     AS3952  TELLABS-ASN - TELLABS Operations, Inc.
        204.154.126.0/24     AS3952  TELLABS-ASN - TELLABS Operations, Inc.
        204.154.127.0/24     AS3952  TELLABS-ASN - TELLABS Operations, Inc.
        204.194.110.0/23     AS30653 EXOBIT - Exobit Networks Inc.
        205.150.0.0/15       AS701   ALTERNET-AS - UUNET Technologies, Inc.
        206.108.96.0/19      AS577   BACOM - Bell Advanced Communications Inc.
        206.128.104.0/21     AS11709 VIC - VIRTUAL INTERACTIVE CENTER
        206.167.57.0/24      AS376   RISQ-AS - Reseau Interordinateurs Scientique Quebecois (RISQ)
        206.191.64.0/18      AS15290 ALLST-15290 - Allstream Corp. Corporation Allstream
        206.191.96.0/19      AS15290 ALLST-15290 - Allstream Corp. Corporation Allstream
        207.231.96.0/19      AS11194 NUNETPA - NuNet Inc
        208.53.224.0/19      AS13576 SDNET - SOUTH DAKOTA NETWORK
        208.138.48.0/20      AS7955  SOURCENET - SourceNet Corporation
        209.134.0.0/18       AS8082  WORLDSITE - Worldsite Networks
        209.205.69.0/24      AS21578 Universidad autonoma de Bucaramanga
        209.205.70.0/24      AS21578 Universidad autonoma de Bucaramanga
        209.205.81.0/24      AS15066 SkyNet de Colombia S.A.
        209.205.82.0/24      AS15066 SkyNet de Colombia S.A.
        209.205.84.0/24      AS15066 SkyNet de Colombia S.A.
        209.213.32.0/19      AS10629 INTERPAC - Inter-Pacific Network Services
        209.222.137.0/24     AS27429 TIL - Telesat International Ltd.
        209.251.0.0/19       AS11036 SISCOM - SISCOM, Inc
        216.37.110.0/23      AS4264  CERNET-ASN-BLOCK - California Education and Research Federation Network
        216.82.160.0/20      AS13823 CALYX-USA - Calyx Internet Access Corp.
        216.96.128.0/18      AS7018  ATT-INTERNET4 - AT&T WorldNet Services
        216.145.200.0/21     AS20304 JVLNET - JVLNET Internet Services
        216.171.96.0/20      AS3356  LEVEL3 Level 3 Communications
        216.194.112.0/20     AS29738 UVNET-ASN1 - UVNET
        216.194.113.0/24     AS29738 UVNET-ASN1 - UVNET
        216.228.64.0/21      AS6295  WHIDBEY1 - Whidbey Internet Services


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

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