This report has been generated at Fri May 7 21:43:29 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
30-04-04 134095 94127
01-05-04 134113 94087
02-05-04 134248 94105
03-05-04 134191 94094
04-05-04 134105 94226
05-05-04 134298 94295
06-05-04 134223 94305
07-05-04 134302 94283
AS Summary
17091 Number of ASes in routing system
6904 Number of ASes announcing only one prefix
1439 Largest number of prefixes announced by an AS
AS7018 : ATTW AT&T WorldNet Services
73602816 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').
--- 07May04 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 134447 94377 40070 29.8% All ASes
AS4134 750 152 598 79.7% CHINANET-BACKBONE
No.31,Jin-rong Street
AS4323 715 200 515 72.0% TWTC Time Warner Telecom
AS7018 1439 997 442 30.7% ATTW AT&T WorldNet Services
AS7843 502 114 388 77.3% ADELPH-13 Adelphia Corp.
AS6197 693 309 384 55.4% BNS-14 BellSouth Network
Solutions, Inc
AS701 1297 932 365 28.1% UU UUNET Technologies, Inc.
AS9583 463 101 362 78.2% SATYAMNET-AS Satyam Infoway
Ltd.,
AS22909 390 34 356 91.3% CMCS Comcast Cable
Communications, Inc.
AS6198 565 231 334 59.1% BNS-14 BellSouth Network
Solutions, Inc
AS27364 363 40 323 89.0% ARMC Armstrong Cable Services
AS22773 370 49 321 86.8% CXAB Cox Communications Inc.
Atlanta
AS9929 335 31 304 90.7% CNCNET-CN China Netcom Corp.
AS17676 339 37 302 89.1% JPNIC-JP-ASN-BLOCK Japan
Network Information Center
AS1239 939 638 301 32.1% SPRN Sprint
AS4355 381 99 282 74.0% ERSD EARTHLINK, INC
AS6140 382 103 279 73.0% IMPSA ImpSat
AS6478 304 49 255 83.9% ATTW AT&T WorldNet Services
AS209 740 503 237 32.0% QWEST-4 Qwest
AS1221 855 621 234 27.4% ASN-TELSTRA Telstra Pty Ltd
AS25844 243 16 227 93.4% SASMFL-2 Skadden, Arps, Slate,
Meagher & Flom LLP
AS14654 228 4 224 98.2% WAYPOR-3 Wayport
AS4766 469 259 210 44.8% KIX Korea Internet Exchange
for "96 World Internet
Exposition
AS3356 897 689 208 23.2% LEVEL3 Level 3 Communications
AS11305 240 41 199 82.9% INTERL-80 Interland
Incorporated
AS2386 424 240 184 43.4% ADCS-1 AT&T Data
Communications Services
AS5668 380 199 181 47.6% CIH-12 CenturyTel Internet
Holdings, Inc.
AS6327 208 28 180 86.5% SHAWC-2 Shaw Communications
Inc.
AS19262 267 89 178 66.7% VGN-2 Verizon Global Networks
AS6347 401 227 174 43.4% SAVV SAVVIS Communications
Corporation
AS14824 275 108 167 60.7% NCC-105 NewSouth
Communications Corp.
Total 15854 7140 8714 55.0% Top 30 total
Possible Bogus Routes
24.138.80.0/20 AS11260 AHSICHCL Andara High Speed Internet c/o Halifax Cable Ltd.
24.160.0.0/11 AS20115 CC04 Charter Communications
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
64.46.4.0/22 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 AS3408
64.46.63.0/24 AS7850 IHIGHW iHighway.net, Inc.
66.114.0.0/19 AS16526 BIRCHT Birch Telecom, Inc.
69.6.224.0/19 AS32392 HOSTI-3 Hosting-Network GmbH
69.26.32.0/19 AS17307 VIRTEL-15 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
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 & Greece 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
198.97.247.0/24 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.
198.161.87.0/24 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
199.197.8.0/22 AS21814 PARSON-18 Parsons Corp.
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)
202.70.28.0/24 AS4515 ERX-STAR Star Internet Services 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 INDOSATNET-ASN
202.164.224.0/19 AS7599 IPXC-AS-AP IP Exchange
203.32.4.0/23 AS7617
203.62.0.0/17 AS7572 AARNET-ACT-RNO Australian Academic and Reasearch Network (AARNet)
203.132.107.0/24 AS10236 FOXGOLD-NET-AU-AP FOXGOLD COMMUNICATIONS
203.132.108.0/24 AS10236 FOXGOLD-NET-AU-AP FOXGOLD COMMUNICATIONS
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.
205.159.72.0/24 AS1660 ANSCOM-5 ANS Communications
206.41.32.0/19 AS14824 NCC-105 NewSouth Communications Corp.
206.81.187.0/24 AS19194 SNL-8 Sentris Network LLC
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
206.251.69.0/24 AS27429 TIL-33 Telesat International Ltd.
206.253.190.0/23 AS8123 POLYBA Polybase
207.231.96.0/19 AS11194 NUNETI NuNet Inc
208.81.187.0/24 AS19194 SNL-8 Sentris Network LLC
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.
209.191.81.0/24 AS6347 SAVV SAVVIS Communications Corporation
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
209.213.50.0/24 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
210.213.0.0/19 AS6453 GLOBEINTERNET 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
216.186.151.0/24 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
216.186.192.0/22 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