The Cidr Report

27 May 2005

      This report has been generated at Fri May 27 21:44:53 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
        20-05-05    158685      108256
        21-05-05    158972      108395
        22-05-05    159109      108397
        23-05-05    159008      108394
        24-05-05    159076      108516
        25-05-05    159232      108495
        26-05-05    159288      108591
        27-05-05    159418      108656

AS Summary
         19625  Number of ASes in routing system
          8044  Number of ASes announcing only one prefix
          1475  Largest number of prefixes announced by an AS
                AS7018 : ATT-INTERNET4 - AT&T WorldNet Services
      90462976  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').

 --- 27May05 ---
ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

Table     159514   108673    50841    31.9%   All ASes

AS4323      1116      220      896    80.3%   TWTC - Time Warner Telecom
AS18566      812        8      804    99.0%   COVAD - Covad Communications
AS4134       899      223      676    75.2%   CHINANET-BACKBONE
                                               No.31,Jin-rong Street
AS721       1111      562      549    49.4%   DLA-ASNBLOCK-AS - DoD Network
                                               Information Center
AS27364      565       22      543    96.1%   ACS-INTERNET - Armstrong Cable
                                               Services
AS7018      1475      954      521    35.3%   ATT-INTERNET4 - AT&T WorldNet
                                               Services
AS22773      488       25      463    94.9%   CCINET-2 - Cox Communications
                                               Inc.
AS6467       423       34      389    92.0%   ESPIRECOMM - e.spire
                                               Communications, Inc.
AS6197       907      519      388    42.8%   BATI-ATL - BellSouth Network
                                               Solutions, Inc
AS7725       434       48      386    88.9%   CCH-AS7 - Comcast Cable
                                               Communications Holdings, Inc
AS3602       523      142      381    72.8%   SPRINT-CA-AS - Sprint Canada
                                               Inc.
AS17676      432       79      353    81.7%   JPNIC-JP-ASN-BLOCK Japan
                                               Network Information Center
AS9929       352       48      304    86.4%   CNCNET-CN China Netcom Corp.
AS4766       577      281      296    51.3%   KIXS-AS-KR Korea Telecom
AS6140       408      127      281    68.9%   IMPSAT-USA - ImpSat
AS14654      268        6      262    97.8%   WAYPORT - Wayport
AS9443       374      123      251    67.1%   INTERNETPRIMUS-AS-AP Primus
                                               Telecommunications
AS6478       401      153      248    61.8%   ATT-INTERNET3 - AT&T WorldNet
                                               Services
AS7545       499      255      244    48.9%   TPG-INTERNET-AP TPG Internet
                                               Pty Ltd
AS15270      287       44      243    84.7%   AS-PAETEC-NET - PaeTec.net -a
                                               division of
                                               PaeTecCommunications, Inc.
AS1239       887      647      240    27.1%   SPRINTLINK - Sprint
AS9498       305       75      230    75.4%   BBIL-AP BHARTI BT INTERNET
                                               LTD.
AS4755       512      283      229    44.7%   VSNL-AS Videsh Sanchar Nigam
                                               Ltd. Autonomous System
AS9583       742      513      229    30.9%   SIFY-AS-IN Sify Limited
AS6198       463      238      225    48.6%   BATI-MIA - BellSouth Network
                                               Solutions, Inc
AS5668       488      265      223    45.7%   AS-5668 - CenturyTel Internet
                                               Holdings, Inc.
AS2386       850      635      215    25.3%   INS-AS - AT&T Data
                                               Communications Services
AS11456      308      100      208    67.5%   NUVOX - NuVox Communications,
                                               Inc.
AS6167       266       68      198    74.4%   CELLCO-PART - Cellco
                                               Partnership
AS812        218       21      197    90.4%   ROGERS-CABLE - Rogers Cable
                                               Inc.

Total      17390     6718    10672    61.4%   Top 30 total

Possible Bogus Routes

        24.246.0.0/17        AS7018  ATT-INTERNET4 - AT&T WorldNet Services
        24.246.128.0/18      AS7018  ATT-INTERNET4 - AT&T WorldNet Services
        64.9.224.0/19        AS209   ASN-QWEST - Qwest
        64.17.32.0/24        AS13488 CBWU-13488 - Continental Broadband Florida, Inc DBA WebUnited
        64.17.33.0/24        AS13488 CBWU-13488 - Continental Broadband Florida, Inc DBA WebUnited
        64.17.37.0/24        AS13488 CBWU-13488 - Continental Broadband Florida, Inc DBA WebUnited
        64.127.0.0/18        AS7018  ATT-INTERNET4 - AT&T WorldNet Services
        66.37.96.0/20        AS3764  IA-HOU-AS - Internet America, Inc.
        66.164.232.0/24      AS6197  BATI-ATL - BellSouth Network Solutions, Inc
        66.205.192.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.193.0/24      AS174   COGENT Cogent/PSI
        66.205.194.0/24      AS174   COGENT Cogent/PSI
        66.205.195.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.196.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.197.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.198.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.199.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.200.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.201.0/24      AS22278 LINUXLABS - linux labs
        66.205.202.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.204.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.205.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.206.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.207.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.208.0/24      AS22278 LINUXLABS - linux labs
        66.205.209.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.210.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.211.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.212.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.213.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.215.0/24      AS22278 LINUXLABS - linux labs
        66.205.216.0/24      AS22278 LINUXLABS - linux labs
        66.205.217.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.219.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.220.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.221.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.222.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        66.205.223.0/24      AS6461  MFNX MFN - Metromedia Fiber Network
        172.32.0.0/24        AS7011  CITLINK - Citizens Utilities
        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   MTSAL-ASN - MTS Allstream Inc.
        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
        199.114.160.0/24     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      AS6971  ATG-1 - Advanced Telcom Group, Inc
        209.40.208.0/21      AS16592 Cybernet El Salvador
        209.40.216.0/21      AS16592 Cybernet El Salvador
        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
        216.178.37.0/24      AS3356  LEVEL3 Level 3 Communications
        216.178.39.0/24      AS3356  LEVEL3 Level 3 Communications
        216.178.42.0/24      AS3356  LEVEL3 Level 3 Communications
        216.178.43.0/24      AS3356  LEVEL3 Level 3 Communications
        216.228.64.0/21      AS6295  WHIDBEY1 - Whidbey Internet Services

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

------------------------------------
Copies of this report are mailed to:
  nanog@merit.edu
  eof-list@ripe.net
  apops@apops.net
  routing-wg@ripe.net
  afnog@afnog.org
  swinog@swinog.ch

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