This report has been generated at Fri Jul 22 21:45:40 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
15-07-05 162717 110679
16-07-05 162890 110702
17-07-05 162860 110681
18-07-05 162865 110752
19-07-05 162885 110551
20-07-05 162850 110736
21-07-05 162916 110737
22-07-05 162992 110844
AS Summary
20017 Number of ASes in routing system
8258 Number of ASes announcing only one prefix
1473 Largest number of prefixes announced by an AS
AS7018 : ATT-INTERNET4 - AT&T WorldNet Services
90570240 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').
--- 22Jul05 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 163043 110797 52246 32.0% All ASes
AS4323 1133 227 906 80.0% TWTC - Time Warner Telecom
AS18566 832 8 824 99.0% COVAD - Covad Communications
AS4134 950 229 721 75.9% CHINANET-BACKBONE
No.31,Jin-rong Street
AS27364 554 22 532 96.0% ACS-INTERNET - Armstrong Cable
Services
AS721 1081 555 526 48.7% DLA-ASNBLOCK-AS - DoD Network
Information Center
AS7018 1473 958 515 35.0% ATT-INTERNET4 - AT&T WorldNet
Services
AS7725 509 17 492 96.7% CCH-AS7 - Comcast Cable
Communications Holdings, Inc
AS22773 503 25 478 95.0% CCINET-2 - Cox Communications
Inc.
AS6197 933 511 422 45.2% BATI-ATL - BellSouth Network
Solutions, Inc
AS3602 543 150 393 72.4% SPRINT-CA-AS - Sprint Canada
Inc.
AS17676 463 103 360 77.8% JPNIC-JP-ASN-BLOCK Japan
Network Information Center
AS6467 379 34 345 91.0% ESPIRECOMM - e.spire
Communications, Inc.
AS9929 353 46 307 87.0% CNCNET-CN China Netcom Corp.
AS4766 576 280 296 51.4% KIXS-AS-KR Korea Telecom
AS14654 287 9 278 96.9% WAYPORT - Wayport
AS6140 397 142 255 64.2% IMPSAT-USA - ImpSat
AS6167 326 72 254 77.9% CELLCO-PART - Cellco
Partnership
AS5668 494 242 252 51.0% AS-5668 - CenturyTel Internet
Holdings, Inc.
AS15270 316 65 251 79.4% AS-PAETEC-NET - PaeTec.net -a
division of
PaeTecCommunications, Inc.
AS1239 880 636 244 27.7% SPRINTLINK - Sprint
AS9583 755 511 244 32.3% SIFY-AS-IN Sify Limited
AS23126 263 22 241 91.6% KMCTELCOM-DIA - KMC Telecom,
Inc.
AS11456 314 74 240 76.4% NUVOX - NuVox Communications,
Inc.
AS812 252 20 232 92.1% ROGERS-CABLE - Rogers Cable
Inc.
AS2386 885 655 230 26.0% INS-AS - AT&T Data
Communications Services
AS6198 466 242 224 48.1% BATI-MIA - BellSouth Network
Solutions, Inc
AS7545 513 290 223 43.5% TPG-INTERNET-AP TPG Internet
Pty Ltd
AS9498 334 111 223 66.8% BBIL-AP BHARTI BT INTERNET
LTD.
AS6478 381 167 214 56.2% ATT-INTERNET3 - AT&T WorldNet
Services
AS9304 250 45 205 82.0% HUTCHISON-AS-AP Hutchison
Global Communications
Total 17395 6468 10927 62.8% Top 30 total
Possible Bogus Routes
24.246.0.0/17 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
24.246.78.0/24 AS25994 NPG-001 - NPG Cable, INC
24.246.128.0/18 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
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
66.187.106.0/24 AS18194 PMMSI-AS-AP Philippine Multi-Media
66.187.108.0/24 AS10026 ANC Asia Netcom Corporation
66.187.109.0/24 AS10026 ANC Asia Netcom Corporation
66.205.193.0/24 AS174 COGENT Cogent/PSI
66.205.194.0/24 AS174 COGENT Cogent/PSI
70.64.0.0/13 AS6327 SHAW - Shaw Communications Inc.
72.24.0.0/16 AS11492 CABLEONE - CABLE ONE
85.129.3.0/24 AS14585 CIFNET - CIFNet, Inc.
85.129.4.0/24 AS14585 CIFNET - CIFNet, Inc.
89.192.0.0/16 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS Project.
89.255.248.0/21 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS Project.
90.192.0.0/16 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS Project.
90.255.248.0/21 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS Project.
91.192.0.0/16 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS Project.
91.255.248.0/21 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS Project.
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
193.16.156.0/24 AS31494 DEVICE-MOBILE-INFONETS-AS Joint Stock Company "INFONETS"
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
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
193.47.147.0/24 AS2856 BT-UK-AS BTnet UK Regional network
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
196.3.162.0/24 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
198.160.171.0/24 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
199.114.148.0/24 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.
199.246.116.0/24 AS813 UUNET-AS1 - UUNET Technologies, Inc.
200.49.0.0/20 AS14551 ALTERNET-SA-AS - UUNET Technologies, Inc.
200.49.8.0/21 AS6140 IMPSAT-USA - ImpSat
202.86.252.0/22 AS4748 RESOLINK-AS Resources Linke Network Limited
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
202.142.154.0/24 AS4755 VSNL-AS Videsh Sanchar Nigam Ltd. Autonomous System
202.142.155.0/24 AS4755 VSNL-AS Videsh Sanchar Nigam Ltd. Autonomous System
203.12.45.0/24 AS4854 NETSPACE-AS-AP Netspace Online Systems
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
204.14.208.0/21 AS32952 AS-FTGX - FiberNet Telecom Group
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.
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)
206.191.64.0/18 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
207.231.96.0/19 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
209.239.192.0/19 AS4355 ERMS-EARTHLNK - EARTHLINK, INC
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