This report has been generated at Fri Dec 17 21:44:30 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
10-12-04 149527 103159
11-12-04 148711 103159
12-12-04 148711 103159
13-12-04 148711 102276
14-12-04 148842 102348
15-12-04 148877 102440
16-12-04 148981 102427
17-12-04 149025 102515
AS Summary
18554 Number of ASes in routing system
7609 Number of ASes announcing only one prefix
1413 Largest number of prefixes announced by an AS
AS7018 : ATTW AT&T WorldNet Services
90494720 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').
--- 17Dec04 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 149055 102542 46513 31.2% All ASes
AS18566 755 7 748 99.1% CVAD Covad Communications
AS4134 820 197 623 76.0% CHINANET-BACKBONE
No.31,Jin-rong Street
AS4323 813 227 586 72.1% TWTC Time Warner Telecom
AS27364 441 33 408 92.5% ARMC Armstrong Cable Services
AS721 1057 652 405 38.3% DNIC DoD Network Information
Center
AS7018 1413 1011 402 28.5% ATTW AT&T WorldNet Services
AS22773 416 24 392 94.2% CXA Cox Communications Inc.
AS7843 483 95 388 80.3% ADELPH-13 Adelphia Corp.
AS6197 819 455 364 44.4% BNS-14 BellSouth Network
Solutions, Inc
AS22909 422 97 325 77.0% CMCS Comcast Cable
Communications, Inc.
AS17676 388 64 324 83.5% JPNIC-JP-ASN-BLOCK Japan
Network Information Center
AS6478 466 144 322 69.1% ATTW AT&T WorldNet Services
AS1239 934 624 310 33.2% SPRN Sprint
AS9929 344 40 304 88.4% CNCNET-CN China Netcom Corp.
AS4355 384 99 285 74.2% ERSD EARTHLINK, INC
AS21502 272 3 269 98.9% ASN-NUMERICABLE NUMERICABLE is
a cabled network in France,
AS4766 535 271 264 49.3% KIXS-AS-KR Korea Telecom
AS14654 262 6 256 97.7% WAYPOR-3 Wayport
AS2386 861 616 245 28.5% ADCS-1 AT&T Data
Communications Services
AS9443 366 121 245 66.9% INTERNETPRIMUS-AS-AP Primus
Telecommunications
AS6140 371 131 240 64.7% IMPSA ImpSat
AS25844 244 17 227 93.0% SASMFL-2 Skadden, Arps, Slate,
Meagher & Flom LLP
AS6198 443 222 221 49.9% BNS-14 BellSouth Network
Solutions, Inc
AS22291 290 81 209 72.1% CC04 Charter Communications
AS3602 319 112 207 64.9% SPCA Sprint Canada Inc.
AS4814 213 6 207 97.2% CHINA169-BBN CNCGROUP IP
network��China169 Beijing
Broadband Network
AS9583 577 374 203 35.2% SIFY-AS-IN Sify Limited
AS15270 238 41 197 82.8% PDP-14 PaeTec.net -a division
of PaeTecCommunications, Inc.
AS5668 423 237 186 44.0% CIH-12 CenturyTel Internet
Holdings, Inc.
AS6517 305 119 186 61.0% YIPS Yipes Communications,
Inc.
Total 15674 6126 9548 60.9% 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
24.246.38.0/24 AS25994 NPGCAB NPG Cable, INC
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
64.46.27.0/24 AS8674 NETNOD-IX Netnod Internet Exchange Sverige AB
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
69.26.32.0/19 AS17307 VIRTEL-15 Virtela Communications
132.0.0.0/10 AS721 DNIC DoD Network Information Center
137.0.0.0/13 AS721 DNIC DoD Network Information Center
138.136.0.0/13 AS721 DNIC DoD Network Information Center
158.0.0.0/13 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 ELISA-AS Elisa Oyj
192.40.105.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System
192.44.0.0/19 AS702 AS702 MCI EMEA - Commercial IP service provider in Europe
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
192.153.144.0/21 AS721 DNIC DoD Network Information Center
192.172.0.0/19 AS721 DNIC DoD Network Information Center
192.188.208.0/20 AS721 DNIC DoD Network Information Center
192.200.100.0/24 AS7018 ATTW AT&T WorldNet Services
192.243.32.0/23 AS2044 PALINA Palin Aquisitions Inc.
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 AS721 DNIC DoD Network Information Center
198.97.80.0/20 AS721 DNIC DoD Network Information Center
198.97.88.0/24 AS89 NUSC-1 Naval Underwater Systems Center
198.97.240.0/20 AS721 DNIC DoD Network Information Center
198.97.247.0/24 AS3475 DEPART-52 Department of the Navy
198.101.4.0/22 AS721 DNIC DoD Network Information Center
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.
198.163.155.0/24 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
198.206.52.0/22 AS701 UU UUNET Technologies, Inc.
198.232.133.0/24 AS23075 SKOTOS Skotos Tech, Inc
199.10.0.0/16 AS721 DNIC DoD Network Information Center
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.
199.114.0.0/18 AS568 DISOUN DISO-UNRRA
199.114.0.0/21 AS721 DNIC DoD Network Information Center
199.114.128.0/18 AS721 DNIC DoD Network Information Center
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 AS721 DNIC DoD Network Information Center
199.123.0.0/18 AS721 DNIC DoD Network Information Center
199.123.16.0/20 AS721 DNIC DoD Network Information Center
199.123.80.0/21 AS721 DNIC DoD Network Information Center
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.
200.26.224.0/20 AS26473 CURANET N.V.
202.70.28.0/24 AS4515 ERX-STAR Star Internet Services Ltd.
202.73.128.0/22 AS4058 LINKAGENET-AP CPCNet Hong Kong Ltd.
202.93.0.0/20 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street
202.148.32.0/20 AS17495 GATEWAY-AP BROADBAND WIRELESSS INTERNET SERVICE PROVIDER
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
203.170.14.0/23 AS6648 ASN-SKYINTERNET Autonomous System Number peering of Sky Internet - BAYANTEL Inc. - Philppines
203.210.69.0/24 AS17536 PRODIGY-AS-AP Prodidgy Telecommunications
204.10.120.0/22 AS14123 SFS-60 Sungard Futures Systems
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.
206.29.168.0/21 AS10248 IPI Internet Partners, 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
206.253.190.0/23 AS8123 POLYBA Polybase
207.231.96.0/19 AS11194 NUNETI NuNet Inc
208.81.187.0/24 AS19194 SNL-8 Sentris Network LLC
208.138.48.0/20 AS7955 SOURCE-48 SourceNet Corporation
209.17.80.0/24 AS32272 CLEAR-17 ClearSkye Communications Inc
209.27.51.0/24 AS14132 INTERN-582 Internet Gateway Inc.
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.
209.213.32.0/19 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
210.4.160.0/24 AS27047 DNIC DoD Network Information Center
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
216.145.184.0/21 AS10758 INWAVE INWave Internet, Inc
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
216.145.190.0/24 AS10758 INWAVE INWave Internet, Inc
216.145.191.0/24 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
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