This report has been generated at Fri Jul 16 21:43:40 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
09-07-04 138898 95560
10-07-04 138794 95533
11-07-04 138905 95646
12-07-04 138895 95743
13-07-04 139167 95759
14-07-04 138743 95724
15-07-04 138786 95790
16-07-04 138915 95758
AS Summary
17503 Number of ASes in routing system
7138 Number of ASes announcing only one prefix
1399 Largest number of prefixes announced by an AS
AS7018 : ATTW AT&T WorldNet Services
62877184 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').
--- 16Jul04 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 138916 95770 43146 31.1% All ASes
AS6347 965 103 862 89.3% SAVV SAVVIS Communications
Corporation
AS18566 701 8 693 98.9% CVAD Covad Communications
AS4134 755 163 592 78.4% CHINANET-BACKBONE
No.31,Jin-rong Street
AS4323 739 209 530 71.7% TWTC Time Warner Telecom
AS7018 1399 969 430 30.7% ATTW AT&T WorldNet Services
AS7843 515 130 385 74.8% ADELPH-13 Adelphia Corp.
AS6197 710 332 378 53.2% BNS-14 BellSouth Network
Solutions, Inc
AS22909 398 30 368 92.5% CMCS Comcast Cable
Communications, Inc.
AS701 1278 918 360 28.2% UU UUNET Technologies, Inc.
AS9583 491 141 350 71.3% SATYAMNET-AS Satyam Infoway
Ltd.,
AS27364 377 38 339 89.9% ARMC Armstrong Cable Services
AS6467 364 33 331 90.9% ACSI e.spire Communications,
Inc.
AS22773 382 59 323 84.6% CXAB Cox Communications Inc.
Atlanta
AS1239 946 637 309 32.7% SPRN Sprint
AS11172 351 55 296 84.3% Servicios Alestra S.A de C.V
AS17676 339 50 289 85.3% JPNIC-JP-ASN-BLOCK Japan
Network Information Center
AS9929 320 32 288 90.0% CNCNET-CN China Netcom Corp.
AS6198 507 223 284 56.0% BNS-14 BellSouth Network
Solutions, Inc
AS4355 381 99 282 74.0% ERSD EARTHLINK, INC
AS6478 328 57 271 82.6% ATTW AT&T WorldNet Services
AS14654 240 6 234 97.5% WAYPOR-3 Wayport
AS25844 244 15 229 93.9% SASMFL-2 Skadden, Arps, Slate,
Meagher & Flom LLP
AS4766 487 265 222 45.6% KIXS-AS-KR Korea Telecom
AS3356 892 673 219 24.6% LEVEL3 Level 3 Communications
AS6140 369 166 203 55.0% IMPSA ImpSat
AS9443 357 155 202 56.6% INTERNETPRIMUS-AS-AP Primus
Telecommunications
AS6327 231 32 199 86.1% SHAWC-2 Shaw Communications
Inc.
AS17633 203 8 195 96.1% CHINATELECOM-SD-AS-AP ASN for
Shandong Provincial Net of CT
AS5668 381 194 187 49.1% CIH-12 CenturyTel Internet
Holdings, Inc.
AS2386 407 229 178 43.7% ADCS-1 AT&T Data
Communications Services
Total 16057 6029 10028 62.5% 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
64.46.4.0/22 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.
69.26.32.0/19 AS19803 ASNBLK-VTLA2 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 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 - Commercial IP service provider in Europe
192.80.64.0/19 AS1 LVLT Level 3 Communications, Inc.
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
192.138.208.0/20 AS1 LVLT Level 3 Communications, Inc.
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
192.190.16.0/21 AS1 LVLT Level 3 Communications, Inc.
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 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.
198.161.165.0/24 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
199.114.0.0/18 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.
202.47.1.0/24 AS7491 PI-PH-AS-AP PI-PHILIPINES
202.56.160.0/20 AS10199 DISHNET-AS-AP DishnetDSL Limited
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.
202.81.96.0/19 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD
202.81.109.0/24 AS7657 TIG-US-PAS-AP The Internet Group Limited
202.81.121.0/24 AS10113 DATAFAST-AP DATAFAST TELECOMMUNICATIONS LTD
202.93.0.0/20 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street
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
202.136.128.0/20 AS10199 DISHNET-AS-AP DishnetDSL Limited
202.141.160.0/24 AS9237 HUTCHCA-AS BTN Access Limited
202.152.96.0/20 AS9371 SAKURA-C SRS-SAKURA Internet Inc.
202.152.112.0/20 AS9370 SAKURA-B SRS-SAKURA Internet Inc.
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)
203.84.145.0/24 AS4637 REACH Reach Network Border AS
203.84.146.0/24 AS4637 REACH Reach Network Border AS
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.
204.196.0.0/14 AS1 LVLT Level 3 Communications, Inc.
205.150.0.0/15 AS701 UU UUNET Technologies, Inc.
205.159.72.0/24 AS1660 ANSCOM-5 ANS 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
206.251.69.0/24 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
209.59.0.0/20 AS7181 DGS-19 Digital Gateway Systems
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
209.213.50.0/24 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
209.251.0.0/19 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
216.145.130.0/24 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.
216.145.156.0/24 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
222.204.0.0/15 AS4538 ERX-CERNET-BKB China Education and Research Network Center
Please see http://www.cidr-report.org for the full report