This report has been generated at Sat Sep 11 23:07:39 2004 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 04-09-04 142671 98023 05-09-04 142645 97946 06-09-04 142493 97997 07-09-04 142498 98214 08-09-04 142814 98395 09-09-04 143221 98358 10-09-04 143329 98595 11-09-04 143556 98672 AS Summary 17941 Number of ASes in routing system 7280 Number of ASes announcing only one prefix 1383 Largest number of prefixes announced by an AS AS7018 : ATTW AT&T WorldNet Services 86705664 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'). --- 11Sep04 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 143518 98696 44822 31.2% All ASes AS18566 739 7 732 99.1% CVAD Covad Communications AS4134 781 172 609 78.0% CHINANET-BACKBONE No.31,Jin-rong Street AS4323 778 217 561 72.1% TWTC Time Warner Telecom AS7018 1383 953 430 31.1% ATTW AT&T WorldNet Services AS7843 488 104 384 78.7% ADELPH-13 Adelphia Corp. AS22773 395 21 374 94.7% CXAB Cox Communications Inc. Atlanta AS6467 390 30 360 92.3% ACSI e.spire Communications, Inc. AS701 1247 899 348 27.9% UU UUNET Technologies, Inc. AS27364 366 36 330 90.2% ARMC Armstrong Cable Services AS22909 363 44 319 87.9% CMCS Comcast Cable Communications, Inc. AS6197 715 397 318 44.5% BNS-14 BellSouth Network Solutions, Inc AS1239 952 637 315 33.1% SPRN Sprint AS9929 346 34 312 90.2% CNCNET-CN China Netcom Corp. AS6347 403 96 307 76.2% SAVV SAVVIS Communications Corporation AS17676 346 43 303 87.6% JPNIC-JP-ASN-BLOCK Japan Network Information Center AS11172 352 51 301 85.5% Alestra AS6478 357 71 286 80.1% ATTW AT&T WorldNet Services AS4355 380 99 281 73.9% ERSD EARTHLINK, INC AS4766 545 266 279 51.2% KIXS-AS-KR Korea Telecom AS21502 268 3 265 98.9% ASN-NUMERICABLE NUMERICABLE is a cabled network in France, AS6140 383 124 259 67.6% IMPSA ImpSat AS14654 257 6 251 97.7% WAYPOR-3 Wayport AS9443 359 109 250 69.6% INTERNETPRIMUS-AS-AP Primus Telecommunications AS2386 830 596 234 28.2% ADCS-1 AT&T Data Communications Services AS6198 448 220 228 50.9% BNS-14 BellSouth Network Solutions, Inc AS25844 244 16 228 93.4% SASMFL-2 Skadden, Arps, Slate, Meagher & Flom LLP AS9583 528 304 224 42.4% SATYAMNET-AS Satyam Infoway Ltd., AS721 715 510 205 28.7% DNIC DoD Network Information Center AS6327 228 29 199 87.3% SHAWC-2 Shaw Communications Inc. AS5668 393 200 193 49.1% CIH-12 CenturyTel Internet Holdings, Inc. Total 15979 6294 9685 60.6% 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 64.46.4.0/22 AS11711 TULARO TULAROSA COMMUNICATIONS 64.46.27.0/24 AS8674 NETNOD-IX Netnod Internet Exchange Sverige AB 64.46.34.0/24 AS3408 64.46.63.0/24 AS7850 IHIGHW iHighway.net, Inc. 64.83.96.0/19 AS26956 NETFR NetFree Communications 66.54.112.0/24 AS32899 66.54.113.0/24 AS32899 66.54.114.0/24 AS32899 66.54.115.0/24 AS32899 66.114.0.0/19 AS16526 BIRCHT Birch Telecom, Inc. 69.26.32.0/19 AS17307 VIRTEL-15 Virtela Communications 132.0.0.0/10 AS721 DNIC DoD Network Information Center 137.0.0.0/13 AS721 DNIC DoD Network Information Center 138.136.0.0/13 AS721 DNIC DoD Network Information Center 158.0.0.0/13 AS721 DNIC DoD Network Information Center 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 LANLINK Elisa Oyj 192.40.105.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System 192.43.230.0/24 AS4738 SAARDNET-AS South Australian Academic Research and Development Network 192.44.0.0/19 AS702 AS702 MCI EMEA - Commercial IP service provider in Europe 192.70.164.0/24 AS25689 NRCC-2 National Research Council of Canada 192.80.64.0/19 AS1 LVLT Level 3 Communications, Inc. 192.81.182.0/24 AS719 LANLINK Elisa Oyj 192.81.183.0/24 AS719 LANLINK Elisa Oyj 192.81.184.0/24 AS719 LANLINK Elisa Oyj 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 192.136.71.0/24 AS719 LANLINK Elisa Oyj 192.136.79.0/24 AS719 LANLINK Elisa Oyj 192.138.208.0/20 AS1 LVLT Level 3 Communications, Inc. 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 192.190.16.0/21 AS1 LVLT Level 3 Communications, Inc. 192.243.32.0/23 AS2044 PALINA Palin Aquisitions Inc. 196.1.68.0/24 AS3356 LEVEL3 Level 3 Communications 196.1.104.0/24 AS17495 GATEWAY-AP BROADBAND WIRELESSS INTERNET SERVICE PROVIDER 196.1.105.0/24 AS2697 ERX-ERNET-AS National Centre for Software Technology 196.1.106.0/24 AS2697 ERX-ERNET-AS National Centre for Software Technology 196.1.109.0/24 AS2697 ERX-ERNET-AS National Centre for Software Technology 196.1.110.0/24 AS2697 ERX-ERNET-AS National Centre for Software Technology 196.1.111.0/24 AS2697 ERX-ERNET-AS National Centre for Software Technology 196.1.114.0/24 AS2697 ERX-ERNET-AS National Centre for Software Technology 196.2.95.0/24 AS8668 TELONE-AS TelOne Zimbabwe P/L 196.3.65.0/24 AS4471 MICA-5 Michigan Internet Cooperative Association 196.12.32.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.33.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.34.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.36.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.37.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.38.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.39.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.40.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.41.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.42.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.43.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.44.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.45.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.46.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.47.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.48.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.49.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.50.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.51.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.52.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.53.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.54.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.55.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.56.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.57.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.58.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.59.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.62.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 196.12.63.0/24 AS7633 SOFTNET-AS-AP Software Technology Parks of India 198.17.1.0/24 AS2513 JPNIC-ASBLOCK-AP JPNIC 198.22.61.0/24 AS9792 CIS-AS-AP Corinthian Internet Services 198.23.26.0/24 AS4390 BELLAT-7 Bell Atlantic, Inc. 198.48.0.0/22 AS23754 CITYLINK-AS-NZ Citylink 198.51.210.0/24 AS4736 MAGNADATA-AU Magnadata Australia Pty Ltd 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 198.97.208.0/23 AS721 DNIC DoD Network Information Center 198.97.209.0/24 AS1727 RITSC RITSC-PACSW 198.97.240.0/20 AS721 DNIC DoD Network Information Center 198.97.247.0/24 AS3475 DEPART-52 Department of the Navy 198.99.173.0/24 AS703 UNSPECIFIED UUNET 198.101.4.0/22 AS721 DNIC DoD Network Information Center 198.136.32.0/20 AS19329 MCBCC Martin County Board of County Commissioners 198.142.0.0/16 AS4804 MPX-AS Microplex PTY LTD 198.142.0.0/19 AS4804 MPX-AS Microplex PTY LTD 198.142.5.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.12.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.15.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.19.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.32.0/19 AS4804 MPX-AS Microplex PTY LTD 198.142.39.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.40.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.44.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.64.0/19 AS4804 MPX-AS Microplex PTY LTD 198.142.96.0/19 AS4804 MPX-AS Microplex PTY LTD 198.142.98.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.104.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.128.0/19 AS4804 MPX-AS Microplex PTY LTD 198.142.160.0/19 AS4804 MPX-AS Microplex PTY LTD 198.142.176.0/24 AS4804 MPX-AS Microplex PTY LTD 198.142.192.0/19 AS4804 MPX-AS Microplex PTY LTD 198.142.224.0/19 AS4804 MPX-AS Microplex PTY LTD 198.144.32.0/19 AS3998 CITY CityNet, Inc. 198.161.87.0/24 AS6539 GTGR GT Group Telecom Services Corp. 198.161.165.0/24 AS852 AGTA Telus Advanced Communications 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. 199.114.0.0/18 AS568 DISOUN DISO-UNRRA 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 AS1913 DLA-8 Defense Logistics Agency 199.114.136.0/24 AS1913 DLA-8 Defense Logistics Agency 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 AS1913 DLA-8 Defense Logistics Agency 199.114.154.0/24 AS1733 ADP-41 AF DDN PMO 199.114.156.0/24 AS1913 DLA-8 Defense Logistics Agency 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 199.197.8.0/22 AS21814 PARSON-18 Parsons Corp. 199.202.0.0/16 AS701 UU UUNET Technologies, Inc. 202.47.1.0/24 AS7491 PI-PH-AS-AP PI-PHILIPINES 202.70.28.0/24 AS4515 ERX-STAR Star Internet Services Ltd. 202.73.128.0/22 AS4058 LINKAGENET-AP CPCNet Hong Kong Ltd. 202.81.96.0/19 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.81.109.0/24 AS7657 TIG-US-PAS-AP The Internet Group Limited 202.81.121.0/24 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD 202.93.0.0/20 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street 202.133.3.0/24 AS9335 CIP-JAPAN-AS-AP ATT IPlus 202.164.224.0/19 AS7599 IPXC-AS-AP IP Exchange 203.32.4.0/23 AS7617 203.62.0.0/17 AS7572 AARNET-ACT-RNO Australian Academic and Reasearch Network (AARNet) 203.84.192.0/19 AS17433 PHILWEB-AP PhilWeb.Com, Inc. 203.84.192.0/20 AS17433 PHILWEB-AP PhilWeb.Com, Inc. 203.84.208.0/20 AS17433 PHILWEB-AP PhilWeb.Com, Inc. 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. 204.196.0.0/14 AS1 LVLT Level 3 Communications, Inc. 205.150.0.0/15 AS701 UU UUNET Technologies, Inc. 205.159.72.0/24 AS1660 ANSCOM-5 ANS Communications 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 206.251.69.0/24 AS27429 TIL-33 Telesat International Ltd. 206.253.190.0/23 AS8123 POLYBA Polybase 207.231.96.0/19 AS11194 NUNETI NuNet Inc 208.81.187.0/24 AS19194 SNL-8 Sentris Network LLC 209.143.192.0/18 AS3561 CWU Cable & Wireless USA 209.172.0.0/18 AS7770 TRTI Triton Technologies, 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 209.213.50.0/24 AS10629 INS-52 Inter-Pacific Network Services 209.213.51.0/24 AS10629 INS-52 Inter-Pacific Network Services 209.213.55.0/24 AS10629 INS-52 Inter-Pacific Network Services 209.213.56.0/24 AS10629 INS-52 Inter-Pacific Network Services 209.251.0.0/19 AS11036 SISCOM-1 SISCOM, Inc 216.14.64.0/20 AS3561 CWU Cable & Wireless USA 216.37.110.0/23 AS4264 CERFN California Education and Research Federation Network 216.96.128.0/18 AS7018 ATTW AT&T WorldNet Services 216.145.130.0/24 AS11937 TRXI TRX Inc. 216.145.132.0/24 AS11937 TRXI TRX Inc. 216.145.134.0/24 AS11937 TRXI TRX Inc. 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 216.145.184.0/21 AS10758 INWAVE INWave Internet, Inc 216.145.200.0/21 AS20304 JIS-32 JVLNET Internet Services 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