This report has been generated at Fri Apr 2 21:46:00 2004 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
27-03-04 132310 93050
28-03-04 132386 93063
28-03-04 132413 93080
29-03-04 132391 93044
30-03-04 132491 93154
31-03-04 132578 93355
01-04-04 132840 93364
02-04-04 132847 93149
AS Summary
16870 Number of ASes in routing system
6789 Number of ASes announcing only one prefix
1398 Largest number of prefixes announced by an AS
AS7018 : ATTW AT&T WorldNet Services
73537536 Largest address span announced by an AS (/32s)
AS568 : DISOUN DISO-UNRRA
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').
--- 02Apr04 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 132801 93130 39671 29.9% All ASes
AS4134 670 136 534 79.7% CHINANET-BACKBONE
No.31,Jin-rong Street
AS4323 692 199 493 71.2% TWTC Time Warner Telecom
AS7843 533 108 425 79.7% ADELPH-13 Adelphia Corp.
AS7018 1398 978 420 30.0% ATTW AT&T WorldNet Services
AS6197 685 300 385 56.2% BNS-14 BellSouth Network
Solutions, Inc
AS27364 404 33 371 91.8% ARMC Armstrong Cable Services
AS701 1299 936 363 27.9% UU UUNET Technologies, Inc.
AS22909 380 34 346 91.1% CMCS Comcast Cable
Communications, Inc.
AS6198 554 221 333 60.1% BNS-14 BellSouth Network
Solutions, Inc
AS22773 361 47 314 87.0% CXAB Cox Communications Inc.
Atlanta
AS1239 954 648 306 32.1% SPRN Sprint
AS9583 432 128 304 70.4% SATYAMNET-AS Satyam Infoway
Ltd.,
AS4355 384 99 285 74.2% ERSD EARTHLINK, INC
AS6140 378 110 268 70.9% IMPSA ImpSat
AS17676 306 46 260 85.0% JPNIC-JP-ASN-BLOCK Japan
Network Information Center
AS9929 283 30 253 89.4% CNCNET-CN China Netcom Corp.
AS6478 290 43 247 85.2% ATTW AT&T WorldNet Services
AS1221 870 631 239 27.5% ASN-TELSTRA Telstra Pty Ltd
AS25844 243 17 226 93.0% SASMFL-2 Skadden, Arps, Slate,
Meagher & Flom LLP
AS209 733 511 222 30.3% QWEST-4 Qwest
AS14654 221 4 217 98.2% WAYPOR-3 Wayport
AS11305 243 31 212 87.2% INTERL-80 Interland
Incorporated
AS4766 453 253 200 44.2% KIX Korea Internet Exchange
for "96 World Internet
Exposition
AS20115 596 396 200 33.6% CC04 Charter Communications
AS3356 884 686 198 22.4% LEVEL3 Level 3 Communications
AS9443 360 167 193 53.6% INTERNETPRIMUS-AS-AP Primus
Telecommunications
AS2386 429 241 188 43.8% ADCS-1 AT&T Data
Communications Services
AS4519 204 21 183 89.7% MAASCO Maas Communications
AS6347 372 190 182 48.9% SAVV SAVVIS Communications
Corporation
AS6327 206 28 178 86.4% SHAWC-2 Shaw Communications
Inc.
Total 15817 7272 8545 54.0% 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
60.254.0.0/20 AS23889 MAURITIUS-TELECOM-AS-AP MAURITIUS TELECOM
64.22.0.0/18 AS3561 CWU Cable & Wireless USA
64.46.0.0/18 AS7850 IHIGHW iHighway.net, Inc.
64.46.4.0/22 AS11711 TULARO TULAROSA COMMUNICATIONS
64.46.12.0/24 AS7850 IHIGHW iHighway.net, Inc.
64.46.27.0/24 AS8674 NETNOD-IX Netnod Internet Exchange Sverige AB
64.46.34.0/24 AS29393 CLUEFULCOLO-AS AS for Cluefulcolo.net
64.46.60.0/24 AS7850 IHIGHW iHighway.net, Inc.
64.46.63.0/24 AS7850 IHIGHW iHighway.net, Inc.
66.51.128.0/20 AS23401 NAC Net Access Corporation
66.51.140.0/24 AS23401 NAC Net Access Corporation
66.114.0.0/19 AS16526 BIRCHT Birch Telecom, Inc.
69.26.32.0/19 AS19803 ASNBLK-VTLA2 Virtela Communications
132.0.0.0/10 AS568 DISOUN DISO-UNRRA
137.0.0.0/13 AS568 DISOUN DISO-UNRRA
138.136.0.0/13 AS568 DISOUN DISO-UNRRA
158.0.0.0/13 AS568 DISOUN DISO-UNRRA
164.234.0.0/16 AS721 DNIC DoD Network Information Center
164.234.0.0/18 AS721 DNIC DoD Network Information Center
192.30.93.0/24 AS17757 HPAUS-AP HP Australia
192.30.94.0/24 AS17757 HPAUS-AP HP Australia
192.30.127.0/24 AS719 LANLINK Elisa Oyj
192.40.105.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System
192.43.230.0/24 AS4738 SAARDNET-AS South Australian Academic Research and Development Network
192.44.0.0/19 AS702 AS702 MCI EMEA
192.81.182.0/24 AS719 LANLINK Elisa Oyj
192.81.183.0/24 AS719 LANLINK Elisa Oyj
192.81.184.0/24 AS719 LANLINK 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 Autonomous System
192.135.50.0/24 AS7018 ATTW AT&T WorldNet Services
192.136.71.0/24 AS719 LANLINK Elisa Oyj
192.136.79.0/24 AS719 LANLINK Elisa Oyj
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
192.243.32.0/23 AS2044 PALINA Palin Aquisitions Inc.
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
198.97.192.0/20 AS568 DISOUN DISO-UNRRA
198.97.240.0/20 AS568 DISOUN DISO-UNRRA
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.
198.161.87.0/24 AS6539 GTGR GT Group Telecom Services Corp.
198.161.165.0/24 AS852 AGTA Telus Advanced Communications
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
199.84.0.0/16 AS701 UU UUNET Technologies, Inc.
199.114.0.0/18 AS568 DISOUN DISO-UNRRA
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
199.114.136.0/24 AS1913 DLA-8 Defense Logistics Agency
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 AS1913 DLA-8 Defense Logistics Agency
199.114.154.0/24 AS1733 ADP-41 AF DDN PMO
199.114.156.0/24 AS1913 DLA-8 Defense Logistics Agency
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 AS568 DISOUN DISO-UNRRA
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.
202.2.64.0/20 AS9729 IS-AP iAdvantage Limited
202.47.1.0/24 AS7491 PI-PH-AS-AP PI-PHILIPINES
202.70.0.0/20 AS4658 NETFRONT-AS NETFRONT I.T. LIMITED (HONG KONG)
202.70.24.0/24 AS17888 SINGTEL-HK SingTel Hong Kong Limited
202.70.28.0/24 AS4515 ERX-STAR Star Internet Services Ltd.
202.70.240.0/20 AS4058 LINKAGENET-AP CPCNet Hong Kong Ltd.
202.73.128.0/22 AS4058 LINKAGENET-AP CPCNet Hong Kong Ltd.
202.86.142.0/24 AS30362 HAWAI-1 Hawaii-Pacific Teleport
202.93.0.0/20 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street
202.122.76.0/24 AS17553 TIMELESS-AP System Integration provider
202.123.96.0/20 AS9288 COMCEN-AS-AP Com-Cen Pty Ltd
202.133.3.0/24 AS9335 CIP-JAPAN-AS-AP ATT IPlus
202.155.243.0/24 AS4795 INDOSAT2-ID-AP INDOSATNET-ASN
203.62.0.0/17 AS7572 AARNET-ACT-RNO Australian Academic and Reasearch Network (AARNet)
203.87.224.0/19 AS4799 CHINA169-JT CNCGROUP old Jitong IP network
203.132.107.0/24 AS10236 FOXGOLD-NET-AU-AP FOXGOLD COMMUNICATIONS
203.132.108.0/24 AS10236 FOXGOLD-NET-AU-AP FOXGOLD COMMUNICATIONS
203.132.122.0/24 AS4802 WANTREE-AS-AP Wantree Development
204.69.144.0/22 AS5668 CIH-12 CenturyTel Internet Holdings, Inc.
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.
205.201.128.0/18 AS17263 ZIAN ZiaNet, Inc.
206.41.32.0/19 AS14824 NCC-105 NewSouth Communications Corp.
206.71.48.0/20 AS31797 GALAX-6 Galaxyvisions Inc
206.81.187.0/24 AS19194 SNL-8 Sentris Network LLC
206.108.34.0/24 AS852 AGTA Telus Advanced Communications
206.108.35.0/24 AS852 AGTA Telus Advanced Communications
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
206.253.190.0/23 AS8123 POLYBA Polybase
207.181.0.0/19 AS3561 CWU Cable & Wireless USA
207.231.96.0/19 AS11194 NUNETI NuNet Inc
208.81.187.0/24 AS19194 SNL-8 Sentris Network LLC
209.34.128.0/19 AS3561 CWU Cable & Wireless USA
209.34.160.0/20 AS3561 CWU Cable & Wireless USA
209.55.64.0/18 AS5726 IWCI InterWorld Communications, Inc.
209.169.219.0/24 AS189 GNTY Genuity
209.169.223.0/24 AS189 GNTY Genuity
209.172.0.0/18 AS7770 TRTI Triton Technologies, 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.
209.205.95.0/24 AS6347 SAVV SAVVIS Communications Corporation
209.213.32.0/19 AS10629 INS-52 Inter-Pacific Network Services
209.213.50.0/24 AS10629 INS-52 Inter-Pacific Network Services
209.213.51.0/24 AS10629 INS-52 Inter-Pacific Network Services
209.213.55.0/24 AS10629 INS-52 Inter-Pacific Network Services
209.213.56.0/24 AS10629 INS-52 Inter-Pacific Network Services
209.222.137.0/24 AS27429 TIL-33 Telesat International Ltd.
209.251.0.0/19 AS11036 SISCOM-1 SISCOM, Inc
209.251.64.0/19 AS10266 MDCN MDC, Inc.
210.213.0.0/19 AS6453 GIEUROPE Teleglobe America Inc.
216.18.224.0/21 AS11458 IMBRIS-1 IMBRIS, INC.
216.18.224.0/22 AS11458 IMBRIS-1 IMBRIS, INC.
216.18.228.0/22 AS11458 IMBRIS-1 IMBRIS, INC.
216.96.128.0/18 AS7018 ATTW AT&T WorldNet Services
216.145.130.0/24 AS11937 TRXI TRX Inc.
216.145.132.0/24 AS11937 TRXI TRX Inc.
216.145.133.0/24 AS11937 TRXI TRX Inc.
216.145.134.0/24 AS11937 TRXI TRX Inc.
216.145.135.0/24 AS11937 TRXI TRX Inc.
216.145.152.0/24 AS10758 INWAVE INWave Internet, Inc
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
216.145.184.0/21 AS10758 INWAVE INWave Internet, Inc
216.145.200.0/21 AS20304 JIS-32 JVLNET Internet Services
216.186.128.0/18 AS3561 CWU Cable & Wireless USA
216.186.151.0/24 AS3356 LEVEL3 Level 3 Communications
216.186.152.0/21 AS3356 LEVEL3 Level 3 Communications
216.186.160.0/23 AS3356 LEVEL3 Level 3 Communications
216.186.164.0/22 AS3356 LEVEL3 Level 3 Communications
216.186.192.0/19 AS3561 CWU Cable & Wireless USA
216.186.192.0/22 AS3356 LEVEL3 Level 3 Communications
216.186.198.0/23 AS3356 LEVEL3 Level 3 Communications
216.186.248.0/23 AS3356 LEVEL3 Level 3 Communications
Please see http://www.cidr-report.org for the full report