The Cidr Report

This report has been generated at Fri Mar 4 21:44:37 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
        25-02-05 152805 104910
        26-02-05 152937 104810
        27-02-05 152870 104885
        28-02-05 152958 104995
        01-03-05 153081 105022
        02-03-05 152941 105120
        03-03-05 153056 105312
        04-03-05 153278 105356

AS Summary
         18980 Number of ASes in routing system
          7746 Number of ASes announcing only one prefix
          1452 Largest number of prefixes announced by an AS
                AS7018 : ATTW AT&T WorldNet Services
      90449152 Largest address span announced by an AS (/32s)
                AS721 : DNIC 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').

--- 04Mar05 ---
ASnum NetsNow NetsAggr NetGain % Gain Description

Table 153373 105416 47957 31.3% All ASes

AS4323 1047 223 824 78.7% TWTC Time Warner Telecom
AS18566 773 7 766 99.1% CVAD Covad Communications
AS4134 872 206 666 76.4% CHINANET-BACKBONE
                                               No.31,Jin-rong Street
AS721 1123 567 556 49.5% DNIC DoD Network Information
                                               Center
AS22773 478 26 452 94.6% CXA Cox Communications Inc.
AS7018 1452 1003 449 30.9% ATTW AT&T WorldNet Services
AS27364 465 45 420 90.3% ARMC Armstrong Cable Services
AS6197 868 462 406 46.8% BNS-14 BellSouth Network
                                               Solutions, Inc
AS3602 498 137 361 72.5% SPCA Sprint Canada Inc.
AS6478 501 158 343 68.5% ATTW AT&T WorldNet Services
AS17676 403 79 324 80.4% JPNIC-JP-ASN-BLOCK Japan
                                               Network Information Center
AS9929 350 39 311 88.9% CNCNET-CN China Netcom Corp.
AS4766 574 281 293 51.0% KIXS-AS-KR Korea Telecom
AS1239 924 666 258 27.9% SPRN Sprint
AS14654 260 6 254 97.7% WAYPOR-3 Wayport
AS9443 378 126 252 66.7% INTERNETPRIMUS-AS-AP Primus
                                               Telecommunications
AS4355 297 60 237 79.8% ERSD EARTHLINK, INC
AS9583 607 374 233 38.4% SIFY-AS-IN Sify Limited
AS6140 376 145 231 61.4% IMPSA ImpSat
AS25844 244 15 229 93.9% SASMFL-2 Skadden, Arps, Slate,
                                               Meagher & Flom LLP
AS6198 457 229 228 49.9% BNS-14 BellSouth Network
                                               Solutions, Inc
AS15270 255 35 220 86.3% PDP-14 PaeTec.net -a division
                                               of PaeTecCommunications, Inc.
AS2386 819 611 208 25.4% ADCS-1 AT&T Data
                                               Communications Services
AS9304 246 39 207 84.1% HUTCHISON-AS-AP Hutchison
                                               Global Communications
AS11456 310 106 204 65.8% NUVOX NuVox Communications,
                                               Inc.
AS5668 455 261 194 42.6% CIH-12 CenturyTel Internet
                                               Holdings, Inc.
AS6167 266 79 187 70.3% CELLCO Cellco Partnership
AS22909 339 152 187 55.2% CMCS Comcast Cable
                                               Communications, Inc.
AS6147 205 20 185 90.2% Telefonica del Peru S.A.A.
AS6517 308 123 185 60.1% YIPS Yipes Communications,
                                               Inc.

Total 16150 6280 9870 61.1% Top 30 total

Possible Bogus Routes

        24.138.80.0/20 AS11260 AHSICHCL Andara High Speed Internet c/o Halifax Cable Ltd.
        24.246.0.0/17 AS7018 ATTW AT&T WorldNet Services
        24.246.128.0/18 AS7018 ATTW AT&T WorldNet Services
        64.17.32.0/24 AS5024 BRIDGE-75 BridgeNet, LC
        64.17.33.0/24 AS5024 BRIDGE-75 BridgeNet, LC
        64.17.37.0/24 AS5024 BRIDGE-75 BridgeNet, LC
        64.57.160.0/19 AS3561 SAVVI-3 Savvis
        64.92.128.0/19 AS3561 SAVVI-3 Savvis
        64.127.0.0/18 AS7018 ATTW AT&T WorldNet Services
        64.209.192.0/18 AS3561 SAVVI-3 Savvis
        192.30.93.0/24 AS17757 HPAUS-AP HP Australia
        192.30.94.0/24 AS17757 HPAUS-AP HP Australia
        192.30.127.0/24 AS719 ELISA-AS Elisa Oyj
        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 AS11814 IGST Information Gateway Services - Toronto
        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 NASA 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 ATTW AT&T WorldNet Services
        192.136.53.0/24 AS8346 SONATEL-AS Autonomous System
        192.153.144.0/21 AS721 DNIC DoD Network Information Center
        192.172.0.0/19 AS721 DNIC DoD Network Information Center
        192.188.208.0/20 AS721 DNIC DoD Network Information Center
        192.200.100.0/24 AS7018 ATTW AT&T WorldNet Services
        196.2.95.0/24 AS8668 TELONE-AS TelOne Zimbabwe P/L
        198.23.26.0/24 AS4390 BELLAT-7 Bell Atlantic, Inc.
        198.97.72.0/21 AS721 DNIC DoD Network Information Center
        198.97.80.0/20 AS721 DNIC DoD Network Information Center
        198.97.88.0/24 AS89 NUSC-1 Naval Underwater Systems Center
        198.97.240.0/20 AS721 DNIC DoD Network Information Center
        198.97.247.0/24 AS3475 DEPART-52 Department of the Navy
        198.101.4.0/22 AS721 DNIC DoD Network Information Center
        198.136.32.0/20 AS19329 MCBCC Martin County Board of County Commissioners
        198.144.32.0/19 AS3998 CITY CityNet, Inc.
        198.160.171.0/24 AS7046 UU UUNET Technologies, Inc.
        198.161.87.0/24 AS6539 GTGR GT Group Telecom Services Corp.
        198.163.155.0/24 AS684 MRN Manitoba Regional Network
        198.167.0.0/16 AS7456 INS-51 Interhop Network SERVICES Inc.
        198.167.163.0/24 AS15290 ACCA-2 Allstream Corp. Corporation Allstream
        198.168.0.0/16 AS701 UU UUNET Technologies, Inc.
        198.169.0.0/16 AS803 SASK SaskTel
        198.232.133.0/24 AS23075 SKOTOS Skotos Tech, Inc
        199.10.0.0/16 AS721 DNIC DoD Network Information Center
        199.60.0.0/20 AS271 UBC-3 University of British Columbia
        199.96.44.0/23 AS19092 360NE-1 360Networks (USA) Inc.
        199.96.46.0/24 AS19092 360NE-1 360Networks (USA) Inc.
        199.114.0.0/21 AS721 DNIC DoD Network Information Center
        199.114.128.0/18 AS721 DNIC DoD Network Information Center
        199.114.130.0/24 AS721 DNIC DoD Network Information Center
        199.114.132.0/24 AS721 DNIC DoD Network Information Center
        199.114.134.0/24 AS3541 DISAUN DISA/UNRRA
        199.114.136.0/24 AS27044 DNIC DoD Network Information Center
        199.114.138.0/24 AS721 DNIC DoD Network Information Center
        199.114.140.0/24 AS3544 DISAUN DISA/UNRRA
        199.114.142.0/24 AS721 DNIC DoD Network Information Center
        199.114.144.0/24 AS721 DNIC DoD Network Information Center
        199.114.148.0/24 AS721 DNIC DoD Network Information Center
        199.114.150.0/24 AS721 DNIC DoD Network Information Center
        199.114.152.0/24 AS27033 DNIC DoD Network Information Center
        199.114.154.0/24 AS1733 ADP-41 AF DDN PMO
        199.114.156.0/24 AS27034 DNIC DoD Network Information Center
        199.114.160.0/24 AS1733 ADP-41 AF DDN PMO
        199.120.32.0/19 AS16582 NXLI NEXTLEVEL INTERNET, INC.
        199.121.0.0/16 AS721 DNIC DoD Network Information Center
        199.123.0.0/18 AS721 DNIC DoD Network Information Center
        199.123.16.0/20 AS721 DNIC DoD Network Information Center
        199.123.80.0/21 AS721 DNIC DoD Network Information Center
        199.189.32.0/19 AS7332 IQUEST IQuest Internet
        199.202.0.0/16 AS701 UU UUNET Technologies, Inc.
        201.239.0.0/16 AS22047 VTR BANDA ANCHA S.A.
        202.72.240.0/20 AS24320 RAILCOM Mongolian Railway Commercial Center Railcom
        202.86.252.0/22 AS9304 HUTCHISON-AS-AP Hutchison Global Communications
        202.86.253.0/24 AS9304 HUTCHISON-AS-AP Hutchison Global Communications
        202.86.254.0/24 AS9304 HUTCHISON-AS-AP Hutchison Global Communications
        202.86.255.0/24 AS9304 HUTCHISON-AS-AP Hutchison Global Communications
        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
        203.210.69.0/24 AS17536 PRODIGY-AS-AP Prodidgy Telecommunications
        204.154.125.0/24 AS3952 TELLAB-1 TELLABS Operations, Inc.
        204.154.126.0/24 AS3952 TELLAB-1 TELLABS Operations, Inc.
        204.154.127.0/24 AS3952 TELLAB-1 TELLABS Operations, Inc.
        204.194.110.0/23 AS30653 EXOBI Exobit Networks Inc.
        205.150.0.0/15 AS701 UU UUNET Technologies, Inc.
        206.108.96.0/19 AS577 BAC-14 Bell Advanced Communications Inc.
        206.128.104.0/21 AS11709 VIIN VIRTUAL INTERACTIVE CENTER
        206.167.57.0/24 AS376 RISQR-3 Reseau Interordinateurs Scientique Quebecois (RISQ)
        206.191.64.0/18 AS15290 ACCA-2 Allstream Corp. Corporation Allstream
        207.231.96.0/19 AS11194 NUNETI NuNet Inc
        208.138.48.0/20 AS7955 SOURCE-48 SourceNet Corporation
        209.27.51.0/24 AS14132 INTERN-582 Internet Gateway Inc.
        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 INS-52 Inter-Pacific Network Services
        209.213.48.0/24 AS10629 INS-52 Inter-Pacific Network Services
        209.213.49.0/24 AS10629 INS-52 Inter-Pacific Network Services
        209.251.0.0/19 AS11036 SISCOM-1 SISCOM, Inc
        216.37.110.0/23 AS4264 CERFN California Education and Research Federation Network
        216.96.128.0/18 AS7018 ATTW AT&T WorldNet Services
        216.145.156.0/24 AS20304 JIS-32 JVLNET Internet Services
        216.145.158.0/24 AS20304 JIS-32 JVLNET Internet Services
        216.145.176.0/21 AS20304 JIS-32 JVLNET Internet Services
        216.145.177.0/24 AS20304 JIS-32 JVLNET Internet Services
        216.145.178.0/24 AS20304 JIS-32 JVLNET Internet Services
        216.145.184.0/24 AS10758 INWAVE INWave Internet, Inc
        216.145.185.0/24 AS10758 INWAVE INWave Internet, Inc
        216.145.186.0/24 AS10758 INWAVE INWave Internet, Inc
        216.145.187.0/24 AS10758 INWAVE INWave Internet, Inc
        216.145.188.0/24 AS10758 INWAVE INWave Internet, Inc
        216.145.189.0/24 AS10758 INWAVE INWave Internet, Inc
        216.145.190.0/24 AS10758 INWAVE INWave Internet, Inc
        216.145.191.0/24 AS10758 INWAVE INWave Internet, Inc
        216.145.200.0/21 AS20304 JIS-32 JVLNET Internet Services
        216.171.96.0/20 AS3356 LEVEL3 Level 3 Communications

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