This report has been generated at Fri Jul 1 21:45:49 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
24-06-05 161602 110023
25-06-05 161611 110060
26-06-05 161563 110077
27-06-05 161541 110072
28-06-05 161583 110024
29-06-05 161481 110119
30-06-05 161629 110141
01-07-05 161844 110246
AS Summary
19861 Number of ASes in routing system
8187 Number of ASes announcing only one prefix
1478 Largest number of prefixes announced by an AS
AS7018 : ATT-INTERNET4 - AT&T WorldNet Services
90549760 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').
--- 01Jul05 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 161916 110236 51680 31.9% All ASes
AS4323 1123 221 902 80.3% TWTC - Time Warner Telecom
AS18566 825 8 817 99.0% COVAD - Covad Communications
AS4134 909 228 681 74.9% CHINANET-BACKBONE
No.31,Jin-rong Street
AS721 1111 568 543 48.9% DLA-ASNBLOCK-AS - DoD Network
Information Center
AS27364 555 22 533 96.0% ACS-INTERNET - Armstrong Cable
Services
AS7018 1478 957 521 35.3% ATT-INTERNET4 - AT&T WorldNet
Services
AS7725 497 15 482 97.0% CCH-AS7 - Comcast Cable
Communications Holdings, Inc
AS22773 498 25 473 95.0% CCINET-2 - Cox Communications
Inc.
AS6197 927 507 420 45.3% BATI-ATL - BellSouth Network
Solutions, Inc
AS3602 542 150 392 72.3% SPRINT-CA-AS - Sprint Canada
Inc.
AS17676 436 80 356 81.7% JPNIC-JP-ASN-BLOCK Japan
Network Information Center
AS6467 382 34 348 91.1% ESPIRECOMM - e.spire
Communications, Inc.
AS9929 367 49 318 86.6% CNCNET-CN China Netcom Corp.
AS4766 577 281 296 51.3% KIXS-AS-KR Korea Telecom
AS6140 394 113 281 71.3% IMPSAT-USA - ImpSat
AS14654 282 12 270 95.7% WAYPORT - Wayport
AS15270 310 59 251 81.0% AS-PAETEC-NET - PaeTec.net -a
division of
PaeTecCommunications, Inc.
AS5668 488 239 249 51.0% AS-5668 - CenturyTel Internet
Holdings, Inc.
AS1239 880 638 242 27.5% SPRINTLINK - Sprint
AS23126 260 20 240 92.3% KMCTELCOM-DIA - KMC Telecom,
Inc.
AS2386 881 650 231 26.2% INS-AS - AT&T Data
Communications Services
AS4755 526 298 228 43.3% VSNL-AS Videsh Sanchar Nigam
Ltd. Autonomous System
AS6167 296 71 225 76.0% CELLCO-PART - Cellco
Partnership
AS812 242 20 222 91.7% ROGERS-CABLE - Rogers Cable
Inc.
AS6198 462 240 222 48.1% BATI-MIA - BellSouth Network
Solutions, Inc
AS22909 363 149 214 59.0% DNEO-OSP1 - Comcast Cable
Communications, Inc.
AS11456 312 99 213 68.3% NUVOX - NuVox Communications,
Inc.
AS9498 326 114 212 65.0% BBIL-AP BHARTI BT INTERNET
LTD.
AS6478 378 167 211 55.8% ATT-INTERNET3 - AT&T WorldNet
Services
AS9583 756 551 205 27.1% SIFY-AS-IN Sify Limited
Total 17383 6585 10798 62.1% 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.
66.187.96.0/22 AS9227 ONEHUNDRED-AS-AP ONE HUNDRED SERVICES, INC.
66.187.96.0/24 AS9227 ONEHUNDRED-AS-AP ONE HUNDRED SERVICES, INC.
66.187.97.0/24 AS9227 ONEHUNDRED-AS-AP ONE HUNDRED SERVICES, INC.
66.187.98.0/24 AS9227 ONEHUNDRED-AS-AP ONE HUNDRED SERVICES, INC.
66.187.99.0/24 AS9227 ONEHUNDRED-AS-AP ONE HUNDRED SERVICES, INC.
66.187.100.0/24 AS18194 PMMSI-AS-AP Philippine Multi-Media
66.187.101.0/24 AS18194 PMMSI-AS-AP Philippine Multi-Media
66.187.102.0/24 AS18194 PMMSI-AS-AP Philippine Multi-Media
66.187.103.0/24 AS18194 PMMSI-AS-AP Philippine Multi-Media
66.187.104.0/24 AS18194 PMMSI-AS-AP Philippine Multi-Media
66.187.105.0/24 AS18194 PMMSI-AS-AP Philippine Multi-Media
66.187.108.0/24 AS10026 ANC Asia Netcom Corporation
66.205.193.0/24 AS174 COGENT Cogent/PSI
66.205.194.0/24 AS174 COGENT Cogent/PSI
66.205.206.0/24 AS21510 TRISTAR - Tristar Communications
70.64.0.0/13 AS6327 SHAW - Shaw Communications Inc.
72.24.0.0/16 AS11492 CABLEONE - CABLE ONE
72.29.80.0/24 AS22659 LIQUIDIX - LIQUID COMMUNICATIONS, INC.
72.29.81.0/24 AS22659 LIQUIDIX - LIQUID COMMUNICATIONS, INC.
72.29.82.0/24 AS22659 LIQUIDIX - LIQUID COMMUNICATIONS, INC.
72.29.83.0/24 AS22659 LIQUIDIX - LIQUID COMMUNICATIONS, INC.
72.29.84.0/24 AS22659 LIQUIDIX - LIQUID COMMUNICATIONS, INC.
72.29.85.0/24 AS22659 LIQUIDIX - LIQUID COMMUNICATIONS, INC.
72.29.86.0/24 AS22659 LIQUIDIX - LIQUID COMMUNICATIONS, INC.
72.29.87.0/24 AS22659 LIQUIDIX - LIQUID COMMUNICATIONS, INC.
72.29.88.0/24 AS22659 LIQUIDIX - LIQUID COMMUNICATIONS, INC.
72.29.89.0/24 AS22659 LIQUIDIX - LIQUID COMMUNICATIONS, INC.
72.29.90.0/24 AS22659 LIQUIDIX - LIQUID COMMUNICATIONS, INC.
72.29.91.0/24 AS22659 LIQUIDIX - LIQUID COMMUNICATIONS, INC.
72.29.92.0/24 AS22659 LIQUIDIX - LIQUID COMMUNICATIONS, INC.
72.29.93.0/24 AS22659 LIQUIDIX - LIQUID COMMUNICATIONS, INC.
72.29.94.0/24 AS22659 LIQUIDIX - LIQUID COMMUNICATIONS, INC.
72.29.95.0/24 AS22659 LIQUIDIX - LIQUID COMMUNICATIONS, INC.
132.0.0.0/10 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
137.0.0.0/13 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
138.136.0.0/13 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
158.0.0.0/13 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
163.142.0.0/16 AS2500 JPNIC-ASBLOCK-AP JPNIC
190.192.193.0/24 AS3301 TELIANET-SWEDEN TeliaNet Sweden
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
192.88.99.0/24 AS29259 DE-IABG-TELEPORT IABG Teleport, DE
192.107.104.0/24 AS6458 GUATEL
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
193.30.28.0/22 AS12374 LFNET-AS01 LF.net Netzwerksysteme GmbH
193.32.19.0/24 AS702 AS702 MCI EMEA - Commercial IP service provider in Europe
193.32.20.0/23 AS702 AS702 MCI EMEA - Commercial IP service provider in Europe
193.36.1.0/24 AS8220 COLT COLT Telecommunications - www.colt.net <www.colt.net>
193.37.69.0/24 AS2856 BT-UK-AS BTnet UK Regional network
193.37.236.0/24 AS702 AS702 MCI EMEA - Commercial IP service provider in Europe
193.110.77.0/24 AS3356 LEVEL3 Level 3 Communications
193.110.78.0/24 AS3356 LEVEL3 Level 3 Communications
193.110.79.0/24 AS3356 LEVEL3 Level 3 Communications
193.110.97.0/24 AS3356 LEVEL3 Level 3 Communications
194.31.227.0/24 AS21461 TRANSFAIRNET Transfair-net GmbH Krefeld
194.32.174.0/23 AS8426 CLARANET-AS ClaraNET
194.59.176.0/20 AS1273 CW Cable & Wireless
194.59.178.0/24 AS8481 TRANSNET transnet INTERNET Services
194.153.156.0/24 AS24865 KMITCHELL-AS Keith Mitchell's Network
194.246.72.0/23 AS8893 ARTFILES-AS Artfiles New Media GmbH
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
198.203.254.0/23 AS7046 UUNET-CUSTOMER - UUNET Technologies, Inc.
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.
200.49.0.0/20 AS14551 ALTERNET-SA-AS - UUNET Technologies, Inc.
200.49.8.0/21 AS6140 IMPSAT-USA - ImpSat
201.217.128.0/18 AS6057 Administracion Nacional de Telecomunicaciones
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
203.62.0.0/17 AS7572 AARNET-ACT-RNO Australian Academic and Reasearch Network (AARNet)
203.78.48.0/20 AS9299 IPG-AS-AP Philippine Long Distance Telephone Company
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)
206.188.0.0/20 AS14492 DATAPIPE - DataPipe
206.191.64.0/18 AS15290 ALLST-15290 - Allstream Corp. Corporation Allstream
206.191.96.0/19 AS15290 ALLST-15290 - Allstream Corp. Corporation Allstream
207.32.160.0/19 AS14563 MICROCAST - Microcast, Inc
207.32.219.0/24 AS4508 NETSOUTH - American Registry for Internet Numbers
207.32.220.0/24 AS4508 NETSOUTH - American Registry for Internet Numbers
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
209.44.124.0/24 AS22241 ICCEPTS - Integrated Communications Concepts
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
209.251.0.0/19 AS11036 SISCOM - SISCOM, Inc
216.37.110.0/23 AS4264 CERNET-ASN-BLOCK - California Education and Research Federation Network
216.82.160.0/20 AS20481 CALYX-NL Calyx Internet B.V. Netherlands
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