This report has been generated at Fri Apr 28 21:47:31 2006 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
21-04-06 183285 120842
22-04-06 183350 120877
23-04-06 183347 120844
24-04-06 183317 120918
25-04-06 183427 120941
26-04-06 183544 120895
27-04-06 183770 121008
28-04-06 183702 121067
AS Summary
21940 Number of ASes in routing system
9126 Number of ASes announcing only one prefix
1491 Largest number of prefixes announced by an AS
AS7018 : ATT-INTERNET4 - AT&T WorldNet Services
91373312 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').
--- 28Apr06 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 183771 121041 62730 34.1% All ASes
AS4323 1286 256 1030 80.1% TWTC - Time Warner Telecom,
Inc.
AS4134 1116 282 834 74.7% CHINANET-BACKBONE
No.31,Jin-rong Street
AS18566 936 187 749 80.0% COVAD - Covad Communications
Co.
AS721 1003 309 694 69.2% DLA-ASNBLOCK-AS - DoD Network
Information Center
AS22773 651 52 599 92.0% CCINET-2 - Cox Communications
Inc.
AS6197 1008 480 528 52.4% BATI-ATL - BellSouth Network
Solutions, Inc
AS7018 1491 974 517 34.7% ATT-INTERNET4 - AT&T WorldNet
Services
AS19916 563 65 498 88.5% ASTRUM-0001 - OLM LLC
AS855 550 63 487 88.5% CANET-ASN-4 - Aliant Telecom
AS7757 477 19 458 96.0% CCCH-AS4 - Comcast Cable
Communications Holdings, Inc
AS17488 501 50 451 90.0% HATHWAY-NET-AP Hathway IP Over
Cable Internet
AS4755 768 335 433 56.4% VSNL-AS Videsh Sanchar Nigam
Ltd. Autonomous System
AS3602 537 109 428 79.7% AS3602-RTI - Rogers Telecom
Inc.
AS9498 573 156 417 72.8% BBIL-AP BHARTI BT INTERNET
LTD.
AS17676 486 108 378 77.8% JPNIC-JP-ASN-BLOCK Japan
Network Information Center
AS19262 644 279 365 56.7% VZGNI-TRANSIT - Verizon
Internet Services Inc.
AS15270 402 41 361 89.8% AS-PAETEC-NET - PaeTec.net -a
division of
PaeTecCommunications, Inc.
AS11492 629 274 355 56.4% CABLEONE - CABLE ONE
AS812 376 33 343 91.2% ROGERS-CABLE - Rogers Cable
Inc.
AS4766 648 310 338 52.2% KIXS-AS-KR Korea Telecom
AS22047 408 81 327 80.1% VTR BANDA ANCHA S.A.
AS6467 373 47 326 87.4% ESPIRECOMM - Xspedius
Communications Co.
AS18101 340 22 318 93.5% RIL-IDC Reliance Infocom Ltd
Internet Data Centre,
AS16852 354 51 303 85.6% FOCAL-CHICAGO - Focal Data
Communications of Illinois
AS3352 310 29 281 90.6% TELEFONICA-DATA-ESPANA
Internet Access Network of
TDE
AS5668 532 253 279 52.4% AS-5668 - CenturyTel Internet
Holdings, Inc.
AS6167 341 64 277 81.2% CELLCO-PART - Cellco
Partnership
AS14654 291 14 277 95.2% WAYPORT - Wayport
AS16814 316 51 265 83.9% NSS S.A.
AS6198 505 242 263 52.1% BATI-MIA - BellSouth Network
Solutions, Inc
Total 18415 5236 13179 71.6% 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
61.4.64.0/20 AS9929 CNCNET-CN China Netcom Corp.
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
64.90.128.0/20 AS6971 ESCH - Eschelon Telecommunications, Inc.
66.11.32.0/20 AS6261 VISINET - Visionary Systems, Inc.
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
66.117.8.0/24 AS174 COGENT Cogent/PSI
66.163.96.0/20 AS25767 WAVEFORM - Waveform Technology, LLC
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
66.235.158.0/23 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
69.31.151.0/24 AS26627 AS-PILOSOFT - Pilosoft, Inc.
69.39.193.0/24 AS25973 MZIMA - Mzima Networks, Inc.
69.39.195.0/24 AS25973 MZIMA - Mzima Networks, Inc.
69.39.196.0/24 AS25973 MZIMA - Mzima Networks, Inc.
81.91.240.0/20 AS29668 QUBE Qube Networks Limited
89.240.0.0/14 AS13285 OPALTELECOM-AS Opal Telecom
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
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
183.206.196.0/24 AS2188 FR-RENATER-ASTER Reseau Regional ASTER
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
192.44.0.0/19 AS702 AS702 MCI EMEA - Commercial IP service provider in Europe
192.44.0.0/24 AS5501 FRAUNHOFER-CLUSTER-BW Fraunhofer Gesellschaft
192.69.107.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System
192.69.108.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System
192.69.177.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System
192.70.164.0/24 AS25689 NRCNET-AS - National Research Council of Canada
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
192.122.212.0/24 AS209 ASN-QWEST - Qwest
192.124.252.0/22 AS680 DFN-IP DFN-IP service X-WiN
192.133.6.0/24 AS10282 EQUANT-CEEUR EQUANT AS for Central and Eastern Europe region
192.153.144.0/21 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
192.168.255.255/32 AS4637 REACH Reach Network Border AS
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
193.36.1.0/24 AS8220 COLT COLT Telecommunications
193.37.69.0/24 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
194.31.227.0/24 AS21461 TRANSFAIRNET Transfair-net GmbH Krefeld
194.59.176.0/20 AS1273 CW Cable & Wireless
194.153.156.0/24 AS24865 KMITCHELL-AS Keith Mitchell's Network
194.246.72.0/23 AS8893 ARTFILES-AS Artfiles New Media GmbH
195.246.216.0/22 AS15622 MEOCOM old meocom Autonomous System
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
198.101.4.0/22 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
198.136.32.0/20 AS19329 MCNET - Martin County Board of County Commissioners
198.161.87.0/24 AS6539 GT-BELL - Bell Canada
198.163.155.0/24 AS684 MTSAL-ASN - MTS Allstream Inc.
198.167.0.0/16 AS7456 INTERHOP - Interhop Network SERVICES Inc.
198.168.0.0/16 AS701 ALTERNET-AS - UUNET Technologies, Inc.
198.169.0.0/16 AS803 SASKTEL - SaskTel
198.199.198.0/24 AS13671 VRIS-AS-BLOCK-13661-13675 - Verizon Internet Services 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
199.114.0.0/21 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 AS27064 DDN-ASNBLK1 - 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 AS3542 ITSDN-U5 - DISA/UNRRA
199.114.160.0/24 AS1733 CENTAF-SWA - AF DDN PMO
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.
202.9.64.0/19 AS9290 TPN-AS-AP Smart Global Network (M) Sdn Bhd
202.45.159.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
202.58.113.0/24 AS19161 INNOCOM-TELECOM - INNOCOM TELECOM
202.74.32.0/19 AS9315 CWN-AS-AP Chomanan WorldNet Co., Ltd.
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
202.93.0.0/20 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street
202.131.64.0/19 AS9381 NEWTT-IP-AP Wharf T&T Ltd.
202.148.32.0/20 AS17495 GATEWAY-AP BROADBAND WIRELESSS INTERNET SERVICE PROVIDER
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
203.89.134.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
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
203.89.147.0/24 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
203.89.158.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.159.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.99.142.0/24 AS9826 ILINK-HK-AP iLink.net Ltd
203.111.192.0/20 AS7473 SINGTEL-AS-AP Singapore Telecom
204.29.185.0/24 AS7268 ATHENET - Athenet Internet Services
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.
206.128.104.0/21 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
208.66.192.0/22 AS26780 MCCOLO - McColo Corporation
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.
209.205.69.0/24 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.
216.37.110.0/23 AS4264 CERNET-ASN-BLOCK - California Education and Research Federation Network
216.71.224.0/20 AS23527 COTELLIGENCE - Cotelligence, Inc.
216.96.128.0/18 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
216.201.72.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.73.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.74.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.75.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.76.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.77.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.78.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.79.0/24 AS14709 Telefonica Moviles Panama S.A.
216.228.64.0/21 AS6295 WHIDBEY1 - Whidbey Internet Services
216.228.224.0/20 AS13674 VRIS-AS-BLOCK-13661-13675 - Verizon Internet Services Inc.
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