This report has been generated at Fri Mar 11 21:44:47 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
04-03-05 153278 105390
05-03-05 153378 105315
06-03-05 153440 105384
07-03-05 153441 105325
08-03-05 153643 105315
09-03-05 153530 105535
10-03-05 153951 105525
11-03-05 154352 105661
AS Summary
19025 Number of ASes in routing system
7767 Number of ASes announcing only one prefix
1455 Largest number of prefixes announced by an AS
AS7018 : ATTW AT&T WorldNet Services
81710592 Largest address span announced by an AS (/32s)
AS721 : DNIC 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').
--- 11Mar05 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 153828 105617 48211 31.3% All ASes
AS4323 1047 224 823 78.6% TWTC Time Warner Telecom
AS18566 774 7 767 99.1% CVAD Covad Communications
AS4134 873 206 667 76.4% CHINANET-BACKBONE
No.31,Jin-rong Street
AS721 977 429 548 56.1% DNIC DoD Network Information
Center
AS22773 478 26 452 94.6% CXA Cox Communications Inc.
AS7018 1455 1017 438 30.1% ATTW AT&T WorldNet Services
AS27364 465 45 420 90.3% ARMC Armstrong Cable Services
AS6197 872 464 408 46.8% BNS-14 BellSouth Network
Solutions, Inc
AS3602 500 138 362 72.4% SPCA Sprint Canada Inc.
AS6478 500 145 355 71.0% ATTW AT&T WorldNet Services
AS17676 407 82 325 79.9% JPNIC-JP-ASN-BLOCK Japan
Network Information Center
AS9929 347 43 304 87.6% CNCNET-CN China Netcom Corp.
AS4766 573 280 293 51.1% KIXS-AS-KR Korea Telecom
AS14654 260 6 254 97.7% WAYPOR-3 Wayport
AS9443 378 126 252 66.7% INTERNETPRIMUS-AS-AP Primus
Telecommunications
AS1239 904 657 247 27.3% SPRN Sprint
AS9583 608 366 242 39.8% SIFY-AS-IN Sify Limited
AS7545 474 234 240 50.6% TPG-INTERNET-AP TPG Internet
Pty Ltd
AS4355 297 60 237 79.8% ERSD EARTHLINK, INC
AS6198 457 230 227 49.7% BNS-14 BellSouth Network
Solutions, Inc
AS15270 255 35 220 86.3% PDP-14 PaeTec.net -a division
of PaeTecCommunications, Inc.
AS5668 459 242 217 47.3% CIH-12 CenturyTel Internet
Holdings, Inc.
AS6140 382 171 211 55.2% IMPSA ImpSat
AS2386 831 621 210 25.3% ADCS-1 AT&T Data
Communications Services
AS9304 246 39 207 84.1% HUTCHISON-AS-AP Hutchison
Global Communications
AS11456 310 106 204 65.8% NUVOX NuVox Communications,
Inc.
AS6167 271 78 193 71.2% CELLCO Cellco Partnership
AS9498 256 66 190 74.2% BBIL-AP BHARTI BT INTERNET
LTD.
AS22909 340 153 187 55.0% CMCS Comcast Cable
Communications, Inc.
AS6517 308 122 186 60.4% YIPS Yipes Communications,
Inc.
Total 16304 6418 9886 60.6% Top 30 total
Possible Bogus Routes
24.138.80.0/20 AS11260 AHSICHCL Andara High Speed Internet c/o Halifax Cable Ltd.
24.246.0.0/17 AS7018 ATTW AT&T WorldNet Services
24.246.128.0/18 AS7018 ATTW AT&T WorldNet Services
64.17.32.0/24 AS5024 BRIDGE-75 BridgeNet, LC
64.17.33.0/24 AS5024 BRIDGE-75 BridgeNet, LC
64.17.37.0/24 AS5024 BRIDGE-75 BridgeNet, LC
64.57.160.0/19 AS3561 SAVVI-3 Savvis
64.92.128.0/19 AS3561 SAVVI-3 Savvis
64.127.0.0/18 AS7018 ATTW AT&T WorldNet Services
64.209.192.0/18 AS3561 SAVVI-3 Savvis
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.
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 NRCC-2 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 NASA 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 ATTW AT&T WorldNet Services
192.136.53.0/24 AS8346 SONATEL-AS Autonomous System
192.153.144.0/21 AS568 DISOUN DISO-UNRRA
192.172.0.0/19 AS568 DISOUN DISO-UNRRA
192.188.208.0/20 AS568 DISOUN DISO-UNRRA
192.200.100.0/24 AS7018 ATTW AT&T WorldNet Services
196.2.95.0/24 AS8668 TELONE-AS TelOne Zimbabwe P/L
198.23.26.0/24 AS4390 BELLAT-7 Bell Atlantic, Inc.
198.97.72.0/21 AS568 DISOUN DISO-UNRRA
198.97.80.0/20 AS568 DISOUN DISO-UNRRA
198.97.88.0/24 AS89 NUSC-1 Naval Underwater Systems Center
198.97.240.0/20 AS568 DISOUN DISO-UNRRA
198.97.247.0/24 AS3475 DEPART-52 Department of the Navy
198.101.4.0/22 AS568 DISOUN DISO-UNRRA
198.136.32.0/20 AS19329 MCBCC Martin County Board of County Commissioners
198.144.32.0/19 AS3998 CITY CityNet, Inc.
198.160.171.0/24 AS7046 UU UUNET Technologies, Inc.
198.161.87.0/24 AS6539 GTGR GT Group Telecom Services Corp.
198.163.155.0/24 AS684 MRN Manitoba Regional Network
198.167.0.0/16 AS7456 INS-51 Interhop Network SERVICES Inc.
198.167.163.0/24 AS15290 ACCA-2 Allstream Corp. Corporation Allstream
198.168.0.0/16 AS701 UU UUNET Technologies, Inc.
198.169.0.0/16 AS803 SASK SaskTel
198.232.133.0/24 AS23075 SKOTOS Skotos Tech, Inc
199.10.0.0/16 AS568 DISOUN DISO-UNRRA
199.60.0.0/20 AS271 UBC-3 University of British Columbia
199.96.44.0/23 AS19092 360NE-1 360Networks (USA) Inc.
199.96.46.0/24 AS19092 360NE-1 360Networks (USA) Inc.
199.114.0.0/21 AS568 DISOUN DISO-UNRRA
199.114.128.0/18 AS568 DISOUN DISO-UNRRA
199.114.130.0/24 AS721 DNIC DoD Network Information Center
199.114.132.0/24 AS721 DNIC DoD Network Information Center
199.114.134.0/24 AS3541 DISAUN DISA/UNRRA
199.114.136.0/24 AS27044 DNIC DoD Network Information Center
199.114.138.0/24 AS721 DNIC DoD Network Information Center
199.114.140.0/24 AS3544 DISAUN DISA/UNRRA
199.114.142.0/24 AS721 DNIC DoD Network Information Center
199.114.144.0/24 AS721 DNIC DoD Network Information Center
199.114.148.0/24 AS721 DNIC DoD Network Information Center
199.114.150.0/24 AS721 DNIC DoD Network Information Center
199.114.152.0/24 AS27033 DNIC DoD Network Information Center
199.114.154.0/24 AS1733 ADP-41 AF DDN PMO
199.114.156.0/24 AS27034 DNIC DoD Network Information Center
199.114.160.0/24 AS1733 ADP-41 AF DDN PMO
199.120.32.0/19 AS16582 NXLI NEXTLEVEL INTERNET, INC.
199.121.0.0/16 AS568 DISOUN DISO-UNRRA
199.123.0.0/18 AS721 DNIC DoD Network Information Center
199.123.16.0/20 AS568 DISOUN DISO-UNRRA
199.123.80.0/21 AS568 DISOUN DISO-UNRRA
199.189.32.0/19 AS7332 IQUEST IQuest Internet
199.202.0.0/16 AS701 UU UUNET Technologies, Inc.
201.239.0.0/16 AS22047 VTR BANDA ANCHA S.A.
202.72.240.0/20 AS24320 RAILCOM Mongolian Railway Commercial Center Railcom
202.86.252.0/22 AS9304 HUTCHISON-AS-AP Hutchison Global Communications
202.86.253.0/24 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
202.164.224.0/19 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
204.154.125.0/24 AS3952 TELLAB-1 TELLABS Operations, Inc.
204.154.126.0/24 AS3952 TELLAB-1 TELLABS Operations, Inc.
204.154.127.0/24 AS3952 TELLAB-1 TELLABS Operations, Inc.
204.194.110.0/23 AS30653 EXOBI Exobit Networks Inc.
205.150.0.0/15 AS701 UU UUNET Technologies, Inc.
206.108.96.0/19 AS577 BAC-14 Bell Advanced Communications Inc.
206.128.104.0/21 AS11709 VIIN VIRTUAL INTERACTIVE CENTER
206.167.57.0/24 AS376 RISQR-3 Reseau Interordinateurs Scientique Quebecois (RISQ)
206.191.64.0/18 AS15290 ACCA-2 Allstream Corp. Corporation Allstream
206.191.96.0/19 AS15290 ACCA-2 Allstream Corp. Corporation Allstream
207.231.96.0/19 AS11194 NUNETI NuNet Inc
208.138.48.0/20 AS7955 SOURCE-48 SourceNet Corporation
209.27.51.0/24 AS14132 INTERN-582 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 INS-52 Inter-Pacific Network Services
209.213.48.0/24 AS10629 INS-52 Inter-Pacific Network Services
209.213.49.0/24 AS10629 INS-52 Inter-Pacific Network Services
209.251.0.0/19 AS11036 SISCOM-1 SISCOM, Inc
216.37.110.0/23 AS4264 CERFN California Education and Research Federation Network
216.96.128.0/18 AS7018 ATTW AT&T WorldNet Services
216.145.156.0/24 AS20304 JIS-32 JVLNET Internet Services
216.145.158.0/24 AS20304 JIS-32 JVLNET Internet Services
216.145.176.0/21 AS20304 JIS-32 JVLNET Internet Services
216.145.177.0/24 AS20304 JIS-32 JVLNET Internet Services
216.145.178.0/24 AS20304 JIS-32 JVLNET Internet Services
216.145.184.0/24 AS10758 INWAVE INWave Internet, Inc
216.145.185.0/24 AS10758 INWAVE INWave Internet, Inc
216.145.186.0/24 AS10758 INWAVE INWave Internet, Inc
216.145.187.0/24 AS10758 INWAVE INWave Internet, Inc
216.145.188.0/24 AS10758 INWAVE INWave Internet, Inc
216.145.189.0/24 AS10758 INWAVE INWave Internet, Inc
216.145.200.0/21 AS20304 JIS-32 JVLNET Internet Services
216.171.96.0/20 AS3356 LEVEL3 Level 3 Communications
Please see http://www.cidr-report.org for the full report