This report has been generated at Fri May 13 21:44:55 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
06-05-05 157716 108341
07-05-05 157747 108272
08-05-05 157845 108355
09-05-05 157874 107939
10-05-05 157991 107998
11-05-05 158104 108225
12-05-05 158263 108345
13-05-05 158437 108294
AS Summary
19548 Number of ASes in routing system
8018 Number of ASes announcing only one prefix
1475 Largest number of prefixes announced by an AS
AS7018 : ATT-INTERNET4 - AT&T WorldNet Services
90463488 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').
--- 13May05 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 158472 108345 50127 31.6% All ASes
AS4323 1099 221 878 79.9% TWTC - Time Warner Telecom
AS18566 806 8 798 99.0% COVAD - Covad Communications
AS4134 894 220 674 75.4% CHINANET-BACKBONE
No.31,Jin-rong Street
AS721 1113 562 551 49.5% DLA-ASNBLOCK-AS - DoD Network
Information Center
AS27364 565 22 543 96.1% ACS-INTERNET - Armstrong Cable
Services
AS7018 1475 941 534 36.2% ATT-INTERNET4 - AT&T WorldNet
Services
AS22773 483 23 460 95.2% CCINET-2 - Cox Communications
Inc.
AS7725 449 50 399 88.9% CCH-AS7 - Comcast Cable
Communications Holdings, Inc
AS6197 901 513 388 43.1% BATI-ATL - BellSouth Network
Solutions, Inc
AS3602 513 142 371 72.3% SPRINT-CA-AS - Sprint Canada
Inc.
AS17676 431 78 353 81.9% JPNIC-JP-ASN-BLOCK Japan
Network Information Center
AS9929 349 46 303 86.8% CNCNET-CN China Netcom Corp.
AS4766 575 280 295 51.3% KIXS-AS-KR Korea Telecom
AS6478 415 126 289 69.6% ATT-INTERNET3 - AT&T WorldNet
Services
AS6140 401 138 263 65.6% IMPSAT-USA - ImpSat
AS14654 266 6 260 97.7% WAYPORT - Wayport
AS9443 374 123 251 67.1% INTERNETPRIMUS-AS-AP Primus
Telecommunications
AS1239 893 650 243 27.2% SPRINTLINK - Sprint
AS7545 493 252 241 48.9% TPG-INTERNET-AP TPG Internet
Pty Ltd
AS23126 254 18 236 92.9% KMCTELCOM-DIA - KMC Telecom,
Inc.
AS15270 272 38 234 86.0% AS-PAETEC-NET - PaeTec.net -a
division of
PaeTecCommunications, Inc.
AS9583 733 501 232 31.7% SIFY-AS-IN Sify Limited
AS6198 464 236 228 49.1% BATI-MIA - BellSouth Network
Solutions, Inc
AS5668 487 262 225 46.2% AS-5668 - CenturyTel Internet
Holdings, Inc.
AS2386 851 633 218 25.6% INS-AS - AT&T Data
Communications Services
AS9498 297 79 218 73.4% BBIL-AP BHARTI BT INTERNET
LTD.
AS11456 318 109 209 65.7% NUVOX - NuVox Communications,
Inc.
AS6167 264 67 197 74.6% CELLCO-PART - Cellco
Partnership
AS6517 321 128 193 60.1% YIPESCOM - Yipes
Communications, Inc.
AS812 209 21 188 90.0% ROGERS-CABLE - Rogers Cable
Inc.
Total 16965 6493 10472 61.7% Top 30 total
Possible Bogus Routes
172.1.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.2.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.3.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.4.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.5.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.6.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.7.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.8.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.9.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.10.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.11.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.12.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.13.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.14.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.15.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.32.0.0/24 AS7011 CITLINK - Citizens Utilities
172.50.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.51.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.52.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.74.0.0/16 AS12956 TELEFONICA Telefonica Backbone Autonomous System
172.122.28.0/24 AS210 WEST-NET-WEST - Utah Education Network
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
196.3.162.0/24 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 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
199.9.128.0/17 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
199.114.156.0/24 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.
202.86.252.0/22 AS4748 RESOLINK-AS Resources Linke Network Limited
202.93.0.0/20 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street
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
203.99.142.0/24 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)
206.191.64.0/18 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
208.53.224.0/19 AS13576 SDNET - SOUTH DAKOTA NETWORK
208.138.48.0/20 AS7955 SOURCENET - SourceNet Corporation
209.134.0.0/18 AS8082 WORLDSITE - Worldsite Networks
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
209.222.137.0/24 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
216.82.160.0/20 AS13823 CALYX-USA - Calyx Internet Access Corp.
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
216.194.112.0/20 AS29738 UVNET-ASN1 - UVNET
216.194.113.0/24 AS29738 UVNET-ASN1 - UVNET
216.228.64.0/21 AS6295 WHIDBEY1 - Whidbey Internet Services
Please see http://www.cidr-report.org for the full report