This report has been generated at Sun Feb 20 23:44:32 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 13-02-05 151910 104234 14-02-05 151896 104250 15-02-05 152013 104373 16-02-05 152053 104256 17-02-05 151806 104586 18-02-05 152286 104724 19-02-05 152565 104746 20-02-05 152547 104718 AS Summary 18896 Number of ASes in routing system 7732 Number of ASes announcing only one prefix 1454 Largest number of prefixes announced by an AS AS7018 : ATTW AT&T WorldNet Services 90715904 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'). --- 20Feb05 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 152742 104745 47997 31.4% All ASes AS4323 1025 223 802 78.2% TWTC Time Warner Telecom AS18566 767 7 760 99.1% CVAD Covad Communications AS4134 870 205 665 76.4% CHINANET-BACKBONE No.31,Jin-rong Street AS721 1140 572 568 49.8% DNIC DoD Network Information Center AS22773 472 26 446 94.5% CXA Cox Communications Inc. AS27364 464 34 430 92.7% ARMC Armstrong Cable Services AS7018 1454 1026 428 29.4% ATTW AT&T WorldNet Services AS6197 860 457 403 46.9% BNS-14 BellSouth Network Solutions, Inc AS3602 497 136 361 72.6% SPCA Sprint Canada Inc. AS17676 396 75 321 81.1% JPNIC-JP-ASN-BLOCK Japan Network Information Center AS6478 496 187 309 62.3% ATTW AT&T WorldNet Services AS9929 340 36 304 89.4% CNCNET-CN China Netcom Corp. AS4766 575 283 292 50.8% KIXS-AS-KR Korea Telecom AS1239 948 662 286 30.2% SPRN Sprint AS14654 259 6 253 97.7% WAYPOR-3 Wayport AS9443 378 126 252 66.7% INTERNETPRIMUS-AS-AP Primus Telecommunications AS7545 499 260 239 47.9% TPG-INTERNET-AP TPG Internet Pty Ltd AS6140 382 147 235 61.5% IMPSA ImpSat AS4355 293 62 231 78.8% ERSD EARTHLINK, INC AS25844 244 16 228 93.4% SASMFL-2 Skadden, Arps, Slate, Meagher & Flom LLP AS6198 451 226 225 49.9% BNS-14 BellSouth Network Solutions, Inc AS15270 249 35 214 85.9% PDP-14 PaeTec.net -a division of PaeTecCommunications, Inc. AS19262 340 126 214 62.9% VRIS Verizon Internet Services AS22909 420 218 202 48.1% CMCS Comcast Cable Communications, Inc. AS2386 823 629 194 23.6% ADCS-1 AT&T Data Communications Services AS5668 450 262 188 41.8% CIH-12 CenturyTel Internet Holdings, Inc. AS6517 307 120 187 60.9% YIPS Yipes Communications, Inc. AS9498 239 55 184 77.0% BBIL-AP BHARTI BT INTERNET LTD. AS19632 191 8 183 95.8% Metropolis Intercom AS6167 260 78 182 70.0% CELLCO Cellco Partnership Total 16089 6303 9786 60.8% 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 24.246.38.0/24 AS25994 NPGCAB NPG Cable, INC 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 69.26.32.0/19 AS17307 VIRTEL-15 Virtela Communications 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 192.44.0.0/19 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 202.93.0.0/20 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 203.170.14.0/23 AS6648 ASN-SKYINTERNET BAYANTEL-SKY INTERNET TIER 1 ISP in the Philippines 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 208.81.187.0/24 AS19194 SNL-8 Sentris Network LLC 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 216.186.151.0/24 AS3356 LEVEL3 Level 3 Communications 216.186.152.0/21 AS3356 LEVEL3 Level 3 Communications 216.186.160.0/23 AS3356 LEVEL3 Level 3 Communications 216.186.164.0/22 AS3356 LEVEL3 Level 3 Communications 216.186.192.0/22 AS3356 LEVEL3 Level 3 Communications 216.186.198.0/23 AS3356 LEVEL3 Level 3 Communications 216.186.248.0/23 AS3356 LEVEL3 Level 3 Communications Please see http://www.cidr-report.org for the full report