This report has been generated at Mon Feb 2 23:47:43 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 26-01-04 129829 91029 27-01-04 129940 90955 28-01-04 129894 90911 29-01-04 129760 90995 30-01-04 129929 90863 31-01-04 130004 91032 01-02-04 130080 91025 02-02-04 130010 91060 AS Summary 16479 Number of ASes in routing system 6630 Number of ASes announcing only one prefix 1381 Largest number of prefixes announced by an AS AS7018 : ATT-INTERNET4 AT&T WorldNet Services 73517312 Largest address span announced by an AS (/32s) AS568 : SUMNET-AS DISO-UNRRA 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'). --- 02Feb04 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 130093 91079 39014 30.0% All ASes AS4323 683 203 480 70.3% TW-COMM Time Warner Communications, Inc. AS7018 1381 962 419 30.3% ATT-INTERNET4 AT&T WorldNet Services AS6197 676 263 413 61.1% BATI-ATL BellSouth Network Solutions, Inc AS7843 513 116 397 77.4% ADELPHIA-AS Adelphia Corp. AS701 1348 952 396 29.4% ALTERNET-AS UUNET Technologies, Inc. AS27364 382 33 349 91.4% ACS-INTERNET Armstrong Cable Services AS6198 590 244 346 58.6% BATI-MIA BellSouth Network Solutions, Inc AS4134 653 329 324 49.6% CHINANET-BACKBONE No.31,Jin-rong Street AS22909 337 18 319 94.7% DNEO-OSP1 Comcast Cable Communications, Inc. AS22773 337 35 302 89.6% CCINET-2 Cox Communications Inc. Atlanta AS4355 385 99 286 74.3% ERMS-EARTHLNK EARTHLINK, INC AS1239 951 666 285 30.0% SPRINTLINK Sprint AS1221 901 643 258 28.6% ASN-TELSTRA Telstra Pty Ltd AS17676 293 42 251 85.7% GIGAINFRA Softbank BB Corp. AS6347 329 82 247 75.1% DIAMOND SAVVIS Communications Corporation AS9583 335 101 234 69.9% SATYAMNET-AS Satyam Infoway Ltd., AS6140 357 125 232 65.0% IMPSAT-USA ImpSat AS25844 243 16 227 93.4% SKADDEN1 Skadden, Arps, Slate, Meagher & Flom LLP AS6478 267 45 222 83.1% ATT-INTERNET3 AT&T WorldNet Services AS209 720 509 211 29.3% ASN-QWEST Qwest AS14654 214 3 211 98.6% WAYPORT Wayport AS11305 244 42 202 82.8% INTERLAND-NET1 Interland Incorporated AS2386 416 228 188 45.2% INS-AS AT&T Data Communications Services AS20115 606 420 186 30.7% CHARTER-NET-HKY-NC Charter Communications AS4519 201 18 183 91.0% MAAS Maas Communications AS6327 205 28 177 86.3% SHAW Shaw Communications Inc. AS9929 200 30 170 85.0% CNCNET-CN China Netcom Corp. AS15270 208 39 169 81.2% AS-PAETEC-NET PaeTec.net -a division of PaeTecCommunications, Inc. AS2048 249 84 165 66.3% LANET-1 State of Louisiana AS4766 414 251 163 39.4% KIX Korea Internet Exchange for "96 World Internet Exposition Total 14638 6626 8012 54.7% Top 30 total Possible Bogus Routes 24.138.80.0/20 AS11260 ANDARA-HSI Andara High Speed Internet c/o Halifax Cable Ltd. 64.62.126.0/23 AS25700 SWIFTDESK SWIFTDESK VENTURE 66.114.0.0/19 AS16526 BIRCH-TELECOM Birch Telecom, Inc. 66.114.28.0/24 AS15083 INFOLINK-MIA-US Infolink Communication Services, Inc. 66.114.29.0/24 AS15083 INFOLINK-MIA-US Infolink Communication Services, Inc. 66.114.30.0/24 AS15083 INFOLINK-MIA-US Infolink Communication Services, Inc. 66.114.31.0/24 AS15083 INFOLINK-MIA-US Infolink Communication Services, Inc. 69.8.128.0/17 AS7260 NORLIGHT Norlight Telecommunications 132.0.0.0/10 AS568 SUMNET-AS DISO-UNRRA 137.0.0.0/13 AS568 SUMNET-AS DISO-UNRRA 138.136.0.0/13 AS568 SUMNET-AS DISO-UNRRA 158.0.0.0/13 AS568 SUMNET-AS DISO-UNRRA 192.43.230.0/24 AS4738 SAARDNET-AS South Australian Academic Research and Development Network 192.44.0.0/19 AS702 AS702 MCI EMEA 192.64.84.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System 192.83.16.0/20 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System 192.83.32.0/19 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System 192.83.64.0/19 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System 192.83.96.0/22 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System 192.83.100.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System 192.119.135.0/24 AS270 PSCNI-AS National Aeronautics and Space Administration 192.124.252.0/22 AS680 AS680 DFN-IP service G-WiN 192.135.50.0/24 AS7018 ATT-INTERNET4 AT&T WorldNet Services 192.136.71.0/24 AS719 LANLINK Elisa Oyj 192.136.79.0/24 AS719 LANLINK Elisa Oyj 192.153.144.0/21 AS568 SUMNET-AS DISO-UNRRA 192.172.0.0/19 AS568 SUMNET-AS DISO-UNRRA 192.188.208.0/20 AS568 SUMNET-AS DISO-UNRRA 192.243.32.0/23 AS2044 PALIN-AS Palin Aquisitions Inc. 198.23.26.0/24 AS4390 BELLATLANTIC-COM Bell Atlantic, Inc. 198.97.72.0/21 AS568 SUMNET-AS DISO-UNRRA 198.97.80.0/20 AS568 SUMNET-AS DISO-UNRRA 198.97.88.0/24 AS89 NUSC-CSTLNET-AS Naval Underwater Systems Center 198.97.192.0/20 AS568 SUMNET-AS DISO-UNRRA 198.97.240.0/20 AS568 SUMNET-AS DISO-UNRRA 198.101.4.0/22 AS568 SUMNET-AS DISO-UNRRA 198.136.32.0/20 AS19329 MCNET Martin County Board of County Commissioners 198.144.32.0/19 AS3998 CITY-NET CityNet, Inc. 198.161.87.0/24 AS6539 GROUPTLCOM GT Group Telecom Services Corp. 198.161.165.0/24 AS852 ASN852 Telus Advanced Communications 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 199.10.0.0/16 AS568 SUMNET-AS DISO-UNRRA 199.60.0.0/20 AS271 BCNET-AS University of British Columbia 199.84.0.0/16 AS701 ALTERNET-AS UUNET Technologies, Inc. 199.114.0.0/18 AS568 SUMNET-AS DISO-UNRRA 199.114.0.0/21 AS568 SUMNET-AS DISO-UNRRA 199.114.128.0/18 AS568 SUMNET-AS DISO-UNRRA 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 199.114.136.0/24 AS1913 DLA4 Defense Logistics Agency 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 AS1913 DLA4 Defense Logistics Agency 199.114.154.0/24 AS1733 CENTAF-SWA AF DDN PMO 199.114.156.0/24 AS1913 DLA4 Defense Logistics Agency 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 AS568 SUMNET-AS DISO-UNRRA 199.123.0.0/18 AS568 SUMNET-AS DISO-UNRRA 199.123.16.0/20 AS568 SUMNET-AS DISO-UNRRA 199.123.80.0/21 AS568 SUMNET-AS DISO-UNRRA 199.189.32.0/19 AS7332 IQUEST-AS IQuest Internet 199.202.0.0/16 AS701 ALTERNET-AS UUNET Technologies, Inc. 202.47.1.0/24 AS7491 PI-PH-AS-AP PI-PHILIPINES 202.70.0.0/20 AS4658 NETFRONT-AS NETFRONT I.T. LIMITED (HONG KONG) 202.70.16.0/22 AS17888 SINGTEL-HK SingTel Hong Kong Limited 202.70.240.0/20 AS4058 LINKAGENET-AP CPCNet Hong Kong Ltd. 202.72.112.0/22 AS22351 INTELSAT-1 INTELSAT 202.73.128.0/22 AS4058 LINKAGENET-AP CPCNet Hong Kong Ltd. 202.86.128.0/24 AS4755 VSNL-AS Videsh Sanchar Nigam Ltd. Autonomous System 202.86.142.0/24 AS30362 HPT-ASN Hawaii-Pacific Teleport 202.86.171.0/24 AS4755 VSNL-AS Videsh Sanchar Nigam Ltd. Autonomous System 202.86.172.0/23 AS4755 VSNL-AS Videsh Sanchar Nigam Ltd. Autonomous System 202.86.190.0/24 AS4750 loxley-th Loxley Information Co., Ltd. 202.93.0.0/20 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street 202.122.76.0/24 AS17553 TIMELESS-AP System Integration provider 202.133.3.0/24 AS9335 CIP-JAPAN-AS-AP ATT IPlus 203.32.4.0/23 AS7617 AS7617 203.62.0.0/17 AS7572 AARNET-ACT-RNO Australian Academic and Reasearch Network (AARNet) 203.86.2.0/23 AS4058 LINKAGENET-AP CPCNet Hong Kong Ltd. 203.132.97.0/24 AS7652 VIANET-AS-AP Vianet Communications Pty Ltd 203.132.107.0/24 AS10236 FOXGOLD-NET-AU-AP FOXGOLD COMMUNICATIONS 203.132.108.0/24 AS10236 FOXGOLD-NET-AU-AP FOXGOLD COMMUNICATIONS 203.132.111.0/24 AS10236 FOXGOLD-NET-AU-AP FOXGOLD COMMUNICATIONS 203.132.118.0/24 AS18065 CENTRALDATA-WA Central Data Pty Ltd. 203.132.122.0/24 AS4802 WANTREE-AS-AP Wantree Development 203.132.123.0/24 AS18065 CENTRALDATA-WA Central Data Pty Ltd. 203.132.124.0/24 AS18065 CENTRALDATA-WA Central Data Pty Ltd. 203.132.125.0/24 AS4817 TECHEX1-AS-AP Techex Primary Netblock 203.135.99.0/24 AS2687 IBM-MMD-AS IBM 204.69.144.0/22 AS5668 AS-5668 CenturyTel Internet Holdings, Inc. 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. 206.41.32.0/19 AS14824 NEWSOUTH NewSouth Communications Corp. 206.81.187.0/24 AS19194 JOVITA Sentris Network LLC 206.108.34.0/24 AS852 ASN852 Telus Advanced Communications 206.108.35.0/24 AS852 ASN852 Telus Advanced Communications 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 206.251.69.0/24 AS27429 TIL Telesat International Ltd. 207.162.192.0/19 AS4589 EASYNET Easynet Group Plc 207.231.96.0/19 AS11194 NUNETPA NuNet Inc 208.81.187.0/24 AS19194 JOVITA Sentris Network LLC 209.87.192.0/20 AS15290 ALLST-15290 Allstream Corp. Corporation Allstream 209.169.219.0/24 AS189 GENUITY-AS189 Genuity 209.169.223.0/24 AS189 GENUITY-AS189 Genuity 209.172.0.0/18 AS7770 TRITON Triton Technologies, Inc. 209.213.32.0/19 AS10629 INTERPAC Inter-Pacific Network Services 209.213.50.0/24 AS10629 INTERPAC Inter-Pacific Network Services 209.213.51.0/24 AS10629 INTERPAC Inter-Pacific Network Services 209.213.55.0/24 AS10629 INTERPAC Inter-Pacific Network Services 209.213.56.0/24 AS10629 INTERPAC Inter-Pacific Network Services 209.222.137.0/24 AS27429 TIL Telesat International Ltd. 209.240.96.0/19 AS10815 KCNET KCnet, Inc. 209.251.0.0/19 AS11036 SISCOM SISCOM, Inc 209.251.64.0/19 AS10266 NETWAY-AS MDC, Inc. 210.213.0.0/19 AS6453 GIEUROPE Teleglobe America Inc. 216.18.224.0/21 AS11458 IMBRIS IMBRIS, INC. 216.18.224.0/22 AS11458 IMBRIS IMBRIS, INC. 216.18.228.0/22 AS11458 IMBRIS IMBRIS, INC. 216.36.46.0/24 AS7176 GENUITY-AS7176 Genuity 216.36.47.0/24 AS7176 GENUITY-AS7176 Genuity 216.96.128.0/18 AS7018 ATT-INTERNET4 AT&T WorldNet Services Please see http://www.cidr-report.org for the full report