This report has been generated at Fri Nov 18 21:46:21 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
11-11-05 175515 114822
12-11-05 172203 114836
13-11-05 172290 114870
14-11-05 172345 114990
15-11-05 172408 114745
16-11-05 172231 114790
17-11-05 172458 114872
18-11-05 172374 115063
AS Summary
20851 Number of ASes in routing system
8654 Number of ASes announcing only one prefix
1464 Largest number of prefixes announced by an AS
AS7018 : ATT-INTERNET4 - AT&T WorldNet Services
91322624 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').
--- 18Nov05 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 172494 114995 57499 33.3% All ASes
AS4323 1187 236 951 80.1% TWTC - Time Warner Telecom
AS18566 877 11 866 98.7% COVAD - Covad Communications
AS721 1071 313 758 70.8% DLA-ASNBLOCK-AS - DoD Network
Information Center
AS4134 1021 275 746 73.1% CHINANET-BACKBONE
No.31,Jin-rong Street
AS22773 557 26 531 95.3% CCINET-2 - Cox Communications
Inc.
AS7018 1464 954 510 34.8% ATT-INTERNET4 - AT&T WorldNet
Services
AS19916 563 65 498 88.5% ASTRUM-0001 - OLM LLC
AS855 558 65 493 88.4% CANET-ASN-4 - Canadian
Research Network
AS3602 542 104 438 80.8% SPRINT-CA-AS - Sprint Canada
Inc.
AS6197 960 561 399 41.6% BATI-ATL - BellSouth Network
Solutions, Inc
AS17676 470 101 369 78.5% JPNIC-JP-ASN-BLOCK Japan
Network Information Center
AS11492 604 249 355 58.8% CABLEONE - CABLE ONE
AS812 367 30 337 91.8% ROGERS-CABLE - Rogers Cable
Inc.
AS6467 389 56 333 85.6% ESPIRECOMM - e.spire
Communications, Inc.
AS4755 607 275 332 54.7% VSNL-AS Videsh Sanchar Nigam
Ltd. Autonomous System
AS4766 610 287 323 53.0% KIXS-AS-KR Korea Telecom
AS15270 338 25 313 92.6% AS-PAETEC-NET - PaeTec.net -a
division of
PaeTecCommunications, Inc.
AS9583 827 520 307 37.1% SIFY-AS-IN Sify Limited
AS14654 292 6 286 97.9% WAYPORT - Wayport
AS17488 366 83 283 77.3% HATHWAY-NET-AP Hathway IP Over
Cable Internet
AS9498 395 117 278 70.4% BBIL-AP BHARTI BT INTERNET
LTD.
AS5668 476 211 265 55.7% AS-5668 - CenturyTel Internet
Holdings, Inc.
AS9929 315 53 262 83.2% CNCNET-CN China Netcom Corp.
AS6167 324 63 261 80.6% CELLCO-PART - Cellco
Partnership
AS1239 845 600 245 29.0% SPRINTLINK - Sprint
AS18101 268 23 245 91.4% RIL-IDC Reliance Infocom Ltd
Internet Data Centre,
AS2386 926 694 232 25.1% INS-AS - AT&T Data
Communications Services
AS6140 423 192 231 54.6% IMPSAT-USA - ImpSat
AS19115 258 27 231 89.5% CHARTER-LEBANON - Charter
Communications
AS16852 278 50 228 82.0% FOCAL-CHICAGO - Focal Data
Communications of Illinois
Total 18178 6272 11906 65.5% 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
64.38.96.0/19 AS19654 HOSTING-NETWORK - HOSTING-NETWORK, INC.
64.66.32.0/20 AS18864 STARTEC - Startec Global Communications
64.66.32.0/22 AS18864 STARTEC - Startec Global Communications
64.66.34.0/23 AS18864 STARTEC - Startec Global Communications
64.127.128.0/17 AS19654 HOSTING-NETWORK - HOSTING-NETWORK, INC.
66.11.32.0/20 AS6261 VISINET - Visionary Systems, Inc.
66.11.224.0/20 AS3356 LEVEL3 Level 3 Communications
66.37.96.0/20 AS3764 IA-HOU-AS - Internet America, Inc.
66.51.134.0/24 AS29876 LNTC - Latency LLC
66.96.0.0/20 AS3770 WORLDPATH-AS - WorldPath Internet Services
66.117.0.0/19 AS30033 NHI-NETWORKS - NHI Networks
66.117.0.0/21 AS30033 NHI-NETWORKS - NHI Networks
66.117.8.0/24 AS174 COGENT Cogent/PSI
66.117.23.0/24 AS31972 EMGINECONCEPT-01 - Emagine Concept, Inc.
66.117.25.0/24 AS31972 EMGINECONCEPT-01 - Emagine Concept, Inc.
66.117.26.0/24 AS31972 EMGINECONCEPT-01 - Emagine Concept, Inc.
66.117.27.0/24 AS31972 EMGINECONCEPT-01 - Emagine Concept, Inc.
66.186.192.0/19 AS19654 HOSTING-NETWORK - HOSTING-NETWORK, INC.
66.187.96.0/24 AS10026 ANC Asia Netcom Corporation
66.187.108.0/24 AS10026 ANC Asia Netcom Corporation
66.187.109.0/24 AS10026 ANC Asia Netcom Corporation
66.216.0.0/18 AS19654 HOSTING-NETWORK - HOSTING-NETWORK, INC.
66.235.158.0/23 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
85.129.3.0/24 AS14585 CIFNET - CIFNet, Inc.
85.129.4.0/24 AS14585 CIFNET - CIFNet, Inc.
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.
125.213.0.0/16 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street
131.64.0.0/12 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
131.68.128.0/19 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
131.68.160.0/19 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
131.68.192.0/19 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
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
151.135.0.0/16 AS4763 TELSTRANZ-AS TelstraClear Ltd
158.0.0.0/13 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
163.142.0.0/16 AS2500 JPNIC-ASBLOCK-AP JPNIC
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
192.72.0.0/16 AS4780 SEEDNET Digital United Inc.
192.72.0.0/18 AS4780 SEEDNET Digital United Inc.
192.72.192.0/18 AS4780 SEEDNET Digital United Inc.
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 AS559 SWITCH SWITCH, Swiss Education and Research Network
192.96.36.0/24 AS5713 AFRINIC African Network Information Center
192.96.37.0/24 AS10474 AFRINIC African Network Information Center
192.96.135.0/24 AS2018 TENET - 1 - The Uninet Project
192.96.136.0/23 AS2018 TENET - 1 - The Uninet Project
192.96.140.0/24 AS2018 TENET - 1 - The Uninet Project
192.96.143.0/24 AS2018 TENET - 1 - The Uninet Project
192.96.145.0/24 AS2018 TENET - 1 - The Uninet Project
192.96.177.0/24 AS6083 AFRINIC African Network Information Center
192.96.250.0/24 AS2018 TENET - 1 - The Uninet Project
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 AS10282 EQUANT-CEEUR EQUANT AS for Central and Eastern Europe region
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
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
193.110.77.0/24 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
193.203.32.0/22 AS6666 CARRIER24-AS Headlight Housing Factory GmbH
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
198.23.26.0/24 AS4390 BELLATLANTIC-COM - Bell Atlantic, Inc.
198.54.82.0/24 AS2018 TENET - 1 - The Uninet Project
198.54.92.0/24 AS2018 TENET - 1 - The Uninet Project
198.54.222.0/24 AS2018 TENET - 1 - The Uninet Project
198.54.249.0/24 AS2018 TENET - 1 - The Uninet Project
198.54.250.0/24 AS2018 TENET - 1 - The Uninet Project
198.54.251.0/24 AS2018 TENET - 1 - The Uninet Project
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
198.97.96.0/19 AS721 DLA-ASNBLOCK-AS - DoD Network Information 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
198.232.133.0/24 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
199.114.0.0/21 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
199.114.131.0/24 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.
200.49.8.0/21 AS6140 IMPSAT-USA - ImpSat
202.58.113.0/24 AS19161 INNOCOM-TELECOM - INNOCOM TELECOM
202.86.252.0/22 AS9304 HUTCHISON-AS-AP Hutchison Global Communications
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
202.90.33.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.90.40.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.90.41.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.90.42.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.90.43.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.90.44.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.90.46.0/23 AS17747 ZIML-AP ZEE INTERACTIVE MUTIMEDIA LTD., BANGALORE
202.93.0.0/20 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street
202.131.64.0/19 AS9381 NEWTT-IP-AP Wharf T&T Ltd.
203.13.171.0/24 AS1221 ASN-TELSTRA Telstra Pty Ltd
203.62.0.0/17 AS7575 AARNET-AS-AP Australian Academic and Reasearch Network (AARNet)
203.78.48.0/20 AS9299 IPG-AS-AP Philippine Long Distance Telephone Company
203.89.133.0/24 AS15412 FLAG-AS Flag Telecom Global Internet AS
203.89.134.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.138.0/24 AS9237 HUTCHCA-AS Corporate Access (HK) Ltd.
203.89.139.0/24 AS17911 BRAINPK-AS-AP Brain Telecommunication Ltd.
203.89.143.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.144.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.145.0/24 AS4637 REACH Reach Network Border AS
203.89.146.0/24 AS4637 REACH Reach Network Border AS
203.89.147.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.148.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.149.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.150.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.151.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.153.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.154.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.158.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.159.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.99.0.0/19 AS17746 ORCONINTERNET-NZ-AP Orcon Internet
203.99.142.0/24 AS9826 ILINK-HK-AP iLink.net Ltd
203.111.192.0/20 AS7473 SINGTEL-AS-AP Singapore Telecom
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.
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
207.231.96.0/19 AS11194 NUNETPA - NuNet Inc
208.138.48.0/20 AS6971 ESCH - Eschelon Telecommunications, Inc.
209.40.192.0/21 AS6487 CyberNet de Guatemala S.A.
209.40.200.0/21 AS6487 CyberNet de Guatemala S.A.
209.40.208.0/21 AS6487 CyberNet de Guatemala S.A.
209.40.216.0/21 AS6487 CyberNet de Guatemala S.A.
209.112.224.0/20 AS19817 DSLEXTREME - DSL Extreme
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.
209.234.0.0/18 AS3845 STATE-NET - CS&W, 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
216.178.37.0/24 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
216.228.224.0/20 AS13674 VRIS-AS-BLOCK-13661-13675 - Verizon Internet Services
216.240.240.0/20 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
216.240.242.0/24 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
Please see http://www.cidr-report.org for the full report