This report has been generated at Fri Mar 25 21:44:39 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
18-03-05 154393 106136
19-03-05 154543 106383
20-03-05 154926 106358
21-03-05 154810 106466
22-03-05 154934 106356
23-03-05 154780 106461
24-03-05 155023 106449
25-03-05 155029 106495
AS Summary
19153 Number of ASes in routing system
7806 Number of ASes announcing only one prefix
1464 Largest number of prefixes announced by an AS
AS7018 : ATT-INTERNET4 - AT&T WorldNet Services
90498048 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').
--- 25Mar05 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 155106 106532 48574 31.3% All ASes
AS4323 1080 227 853 79.0% TWTC - Time Warner Telecom
AS18566 780 7 773 99.1% COVAD - Covad Communications
AS4134 879 210 669 76.1% CHINANET-BACKBONE
No.31,Jin-rong Street
AS721 1120 566 554 49.5% DLA-ASNBLOCK-AS - DoD Network
Information Center
AS22773 475 23 452 95.2% CCINET-2 - Cox Communications
Inc.
AS27364 465 22 443 95.3% ACS-INTERNET - Armstrong Cable
Services
AS6197 876 466 410 46.8% BATI-ATL - BellSouth Network
Solutions, Inc
AS7018 1464 1054 410 28.0% ATT-INTERNET4 - AT&T WorldNet
Services
AS3602 506 144 362 71.5% SPRINT-CA-AS - Sprint Canada
Inc.
AS6478 498 145 353 70.9% ATT-INTERNET3 - AT&T WorldNet
Services
AS17676 424 78 346 81.6% JPNIC-JP-ASN-BLOCK Japan
Network Information Center
AS9929 347 45 302 87.0% CNCNET-CN China Netcom Corp.
AS4766 570 277 293 51.4% KIXS-AS-KR Korea Telecom
AS7545 483 227 256 53.0% TPG-INTERNET-AP TPG Internet
Pty Ltd
AS14654 262 6 256 97.7% WAYPORT - Wayport
AS9443 378 126 252 66.7% INTERNETPRIMUS-AS-AP Primus
Telecommunications
AS1239 911 660 251 27.6% SPRINTLINK - Sprint
AS6140 384 135 249 64.8% IMPSAT-USA - ImpSat
AS9583 631 391 240 38.0% SIFY-AS-IN Sify Limited
AS4355 289 60 229 79.2% ERMS-EARTHLNK - EARTHLINK, INC
AS6198 458 231 227 49.6% BATI-MIA - BellSouth Network
Solutions, Inc
AS15270 261 37 224 85.8% AS-PAETEC-NET - PaeTec.net -a
division of
PaeTecCommunications, Inc.
AS5668 466 258 208 44.6% AS-5668 - CenturyTel Internet
Holdings, Inc.
AS2386 834 627 207 24.8% INS-AS - AT&T Data
Communications Services
AS11456 310 106 204 65.8% NUVOX - NuVox Communications,
Inc.
AS9498 263 69 194 73.8% BBIL-AP BHARTI BT INTERNET
LTD.
AS6167 268 79 189 70.5% CELLCO-PART - Cellco
Partnership
AS6517 309 122 187 60.5% YIPESCOM - Yipes
Communications, Inc.
AS6147 205 20 185 90.2% Telefonica del Peru S.A.A.
AS16852 239 65 174 72.8% FOCAL-CHICAGO - Focal Data
Communications of Illinois
Total 16435 6483 9952 60.6% Top 30 total
Possible Bogus Routes
24.138.80.0/20 AS11260 ANDARA-HSI - Andara High Speed Internet c/o Halifax Cable Ltd.
24.246.0.0/17 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
24.246.128.0/18 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
64.17.32.0/24 AS5024 BRIDGE - BridgeNet, LC
64.17.33.0/24 AS5024 BRIDGE - BridgeNet, LC
64.17.37.0/24 AS5024 BRIDGE - BridgeNet, LC
64.57.160.0/19 AS3561 SAVVIS - Savvis
64.92.128.0/19 AS3561 SAVVIS - Savvis
64.127.0.0/18 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
64.209.192.0/18 AS3561 SAVVIS - Savvis
66.37.96.0/20 AS3764 IA-HOU-AS - Internet America, Inc.
66.164.232.0/24 AS6197 BATI-ATL - BellSouth Network Solutions, Inc
67.47.0.0/17 AS4765 WORLDNET-AS World Net & Services Co., Ltd.
67.47.0.0/18 AS4765 WORLDNET-AS World Net & Services Co., Ltd.
67.47.64.0/18 AS4765 WORLDNET-AS World Net & Services Co., Ltd.
172.32.0.0/24 AS7011 CITLINK - Citizens Utilities
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
192.119.135.0/24 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
196.2.95.0/24 AS8668 TELONE-AS TelOne Zimbabwe P/L
196.192.0.0/20 AS23889 MAURITIUS-TELECOM-AS-AP MAURITIUS TELECOM
196.192.12.0/22 AS23889 MAURITIUS-TELECOM-AS-AP MAURITIUS TELECOM
196.192.32.0/24 AS5511 OPENTRANSIT France Telecom
196.192.33.0/24 AS5511 OPENTRANSIT France Telecom
196.192.34.0/24 AS5511 OPENTRANSIT France Telecom
196.192.35.0/24 AS5511 OPENTRANSIT France Telecom
196.192.36.0/24 AS5511 OPENTRANSIT France Telecom
196.192.37.0/24 AS5511 OPENTRANSIT France Telecom
196.192.39.0/24 AS5511 OPENTRANSIT France Telecom
196.192.45.0/24 AS5511 OPENTRANSIT France Telecom
196.192.46.0/24 AS5511 OPENTRANSIT France Telecom
196.192.47.0/24 AS5511 OPENTRANSIT France Telecom
196.192.64.0/21 AS23889 MAURITIUS-TELECOM-AS-AP MAURITIUS TELECOM
196.192.96.0/20 AS23889 MAURITIUS-TELECOM-AS-AP MAURITIUS TELECOM
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 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 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
199.114.154.0/24 AS1733 CENTAF-SWA - AF DDN PMO
199.114.156.0/24 AS27034 DDN-ASNBLK1 - DoD Network Information Center
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.
202.72.240.0/20 AS24320 RAILCOM Mongolian Railway Commercial Center Railcom
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
202.123.0.0/19 AS23889 MAURITIUS-TELECOM-AS-AP MAURITIUS TELECOM
202.123.2.0/24 AS23889 MAURITIUS-TELECOM-AS-AP MAURITIUS TELECOM
202.123.8.0/22 AS23889 MAURITIUS-TELECOM-AS-AP MAURITIUS TELECOM
202.123.16.0/20 AS23889 MAURITIUS-TELECOM-AS-AP MAURITIUS TELECOM
202.164.224.0/19 AS7599 IPXC-AS-AP IP Exchange
203.32.4.0/23 AS7617 TELEONE-HK TeleTeleOne (HK) Limited
203.62.0.0/17 AS7572 AARNET-ACT-RNO Australian Academic and Reasearch Network (AARNet)
203.99.0.0/19 AS17746 ORCONINTERNET-NZ-AP Orcon Internet
203.210.69.0/24 AS17536 PRODIGY-AS-AP Prodidgy Telecommunications
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)
206.191.64.0/18 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 ATG-1 - Advanced Telcom Group, Inc
209.27.51.0/24 AS14132 INTERNETGATEWAY - Internet Gateway Inc.
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
209.213.48.0/24 AS10629 INTERPAC - Inter-Pacific Network Services
209.213.49.0/24 AS10629 INTERPAC - Inter-Pacific Network Services
209.222.137.0/24 AS27429 TIL - Telesat International Ltd.
209.251.0.0/19 AS11036 SISCOM - SISCOM, Inc
216.37.110.0/23 AS4264 CERNET-ASN-BLOCK - California Education and Research Federation Network
216.96.128.0/18 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
Please see http://www.cidr-report.org for the full report