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BGP Update Report
Interval: 05-May-06 -to- 18-May-06 (14 days)
Observation Point: BGP Peering with AS4637
TOP 20 Unstable Origin AS
Rank ASN Upds % Upds/Pfx AS-Name
1 - AS855 35385 3.2% 62.9 -- CANET-ASN-4 - Aliant Telecom
2 - AS9121 27016 2.4% 35.3 -- TTNET TTnet Autonomous System
3 - AS17974 16736 1.5% 49.1 -- TELKOMNET-AS2-AP PT TELEKOMUNIKASI INDONESIA
4 - AS17430 14425 1.3% 424.3 -- GWBN-CHENGDU Great Wall Broadband Network Service Co.,Ltd
5 - AS6478 13693 1.2% 9.9 -- ATT-INTERNET3 - AT&T WorldNet Services
6 - AS3475 11937 1.1% 459.1 -- LANT-AFLOAT - NCTAMS LANT DET HAMPTON ROADS
7 - AS2386 11474 1.0% 12.9 -- INS-AS - AT&T Data Communications Services
8 - AS15611 9544 0.9% 117.8 -- Iranian Research Organisation
9 - AS4795 9410 0.8% 48.8 -- INDOSAT2-ID INDOSATNET-ASN
10 - AS14410 8827 0.8% 1765.4 -- DALTON - MCM, Inc., DBA: Internet@Dalton
11 - AS5803 8401 0.8% 94.4 -- DDN-ASNBLK - DoD Network Information Center
12 - AS10139 8391 0.8% 67.7 -- MERIDIAN-PH-AP Meridian Telekoms
13 - AS18049 7810 0.7% 58.3 -- TINP-TW Taiwan Infrastructure Network Technologie
14 - AS33766 7372 0.7% 388.0 -- NYALA-COMMUNICATIONS-PTY-LTD NYALA-COMMUNICATIONS-PTY-LTD
15 - AS702 7326 0.7% 21.2 -- AS702 MCI EMEA - Commercial IP service provider in Europe
16 - AS5839 6976 0.6% 258.4 -- DDN-ASNBLK - DoD Network Information Center
17 - AS9425 6935 0.6% 115.6 -- CONCENTRIX-PH-AS-AP Concentrix Technologies, Inc
18 - AS23918 6804 0.6% 51.9 -- CBB-BGP-IBARAKI Connexion By Boeing Ibaraki AS
19 - AS577 6731 0.6% 51.0 -- BACOM - Bell Canada
20 - AS7018 6608 0.6% 6.5 -- ATT-INTERNET4 - AT&T WorldNet Services
TOP 20 Unstable Origin AS (Updates per announced prefix)
Rank ASN Upds % Upds/Pfx AS-Name
1 - AS21027 3398 0.3% 3398.0 -- ASN-PARADORES PARADORES Autonomous System
2 - AS3043 2703 0.2% 2703.0 -- AMPHIB-AS - Amphibian Media Corporation
3 - AS34382 2032 0.2% 2032.0 -- ASSYRUS-SRL-AS Assyrus Srl Maintainer
4 - AS14410 8827 0.8% 1765.4 -- DALTON - MCM, Inc., DBA: Internet@Dalton
5 - AS19982 5524 0.5% 1381.0 -- TOWERSTREAM-PROV - Towerstream
6 - AS23607 2233 0.2% 1116.5 -- ITXPRESS-AS-AP itXpress Pty Ltd. Network AS ISP and DSL
7 - AS16705 2077 0.2% 1038.5 -- STORAGEAPPS - Storage Apps Inc.
8 - AS34378 910 0.1% 910.0 -- RUG-AS Razguliay-UKRROS Group
9 - AS33871 6424 0.6% 642.4 -- NORILSK-TELECOM-AS Norilsk-Telecom Ltd.
10 - AS23917 1251 0.1% 625.5 -- BRIBIE-NET-AS-AP Bribie Island Net Multihomed, Brisbane
11 - AS21260 620 0.1% 620.0 -- POSITIVE-INTERNET-UK-AS Positive Internet UK AS
12 - AS7013 1229 0.1% 614.5 -- NETSELECT - Health Sciences Libraries Consortium
13 - AS7442 577 0.1% 577.0 -- FEDERATED-CA-ASN - Federated Insurance Company of Canada
14 - AS36715 556 0.1% 556.0 -- GSA-ASN - GLOBAL SECURITIES ADVISORS LLC
15 - AS36565 510 0.1% 510.0 -- COUNTY-OF-MONTGOMERY-PA - County of Montgomery
16 - AS30457 997 0.1% 498.5 -- MEEMIC - Meemic Insurance Company
17 - AS3475 11937 1.1% 459.1 -- LANT-AFLOAT - NCTAMS LANT DET HAMPTON ROADS
18 - AS22988 459 0.0% 459.0 -- CAMBARASN1 - Cameron and Barkley Company
19 - AS3319 3140 0.3% 448.6 -- KSNET KSNet
20 - AS17430 14425 1.3% 424.3 -- GWBN-CHENGDU Great Wall Broadband Network Service Co.,Ltd
TOP 20 Unstable Prefixes
Rank Prefix Upds % Origin AS -- AS Name
1 - 81.212.141.0/24 4184 0.3% AS9121 -- TTNET TTnet Autonomous System
2 - 81.212.149.0/24 3916 0.3% AS9121 -- TTNET TTnet Autonomous System
3 - 62.81.240.0/24 3398 0.3% AS21027 -- ASN-PARADORES PARADORES Autonomous System
4 - 211.162.88.0/21 3240 0.2% AS17430 -- GWBN-CHENGDU Great Wall Broadband Network Service Co.,Ltd
5 - 220.114.32.0/21 3231 0.2% AS17430 -- GWBN-CHENGDU Great Wall Broadband Network Service Co.,Ltd
6 - 209.140.24.0/24 2703 0.2% AS3043 -- AMPHIB-AS - Amphibian Media Corporation
7 - 61.0.0.0/8 2556 0.2% AS4678 -- FINE CANON NETWORK COMMUNICATIONS INC.
8 - 81.212.197.0/24 2527 0.2% AS9121 -- TTNET TTnet Autonomous System
9 - 195.175.82.0/23 2362 0.2% AS9121 -- TTNET TTnet Autonomous System
10 - 85.158.80.0/21 2032 0.2% AS34382 -- ASSYRUS-SRL-AS Assyrus Srl Maintainer
11 - 220.114.40.0/22 1992 0.1% AS17430 -- GWBN-CHENGDU Great Wall Broadband Network Service Co.,Ltd
12 - 211.162.82.0/23 1990 0.1% AS17430 -- GWBN-CHENGDU Great Wall Broadband Network Service Co.,Ltd
13 - 211.162.84.0/22 1990 0.1% AS17430 -- GWBN-CHENGDU Great Wall Broadband Network Service Co.,Ltd
14 - 209.160.56.0/22 1980 0.1% AS14361 -- HOPONE-DCA - HopOne Internet Corporation
15 - 152.74.0.0/16 1964 0.1% AS11340 -- Red Universitaria Nacional
16 - 207.43.166.0/23 1772 0.1% AS14410 -- DALTON - MCM, Inc., DBA: Internet@Dalton
17 - 65.174.4.0/23 1772 0.1% AS14410 -- DALTON - MCM, Inc., DBA: Internet@Dalton
18 - 65.119.232.0/24 1764 0.1% AS14410 -- DALTON - MCM, Inc., DBA: Internet@Dalton
19 - 205.160.25.0/24 1762 0.1% AS14410 -- DALTON - MCM, Inc., DBA: Internet@Dalton
20 - 208.46.29.0/24 1757 0.1% AS14410 -- DALTON - MCM, Inc., DBA: Internet@Dalton
Details at http://bgpupdates.potaroo.net
------------------------------------
Copies of this report are mailed to:
nanog(a)merit.edu
eof-list(a)ripe.net
apops(a)apops.net
routing-wg(a)ripe.net
afnog(a)afnog.org
ausnog(a)ausnog.net
1
0
This report has been generated at Fri May 19 21:48:57 2006 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
12-05-06 184436 121583
13-05-06 184477 121546
14-05-06 184416 121611
15-05-06 184572 121619
16-05-06 184547 121741
17-05-06 184490 121623
18-05-06 184811 121829
19-05-06 184902 121899
AS Summary
22138 Number of ASes in routing system
9253 Number of ASes announcing only one prefix
1507 Largest number of prefixes announced by an AS
AS7018 : ATT-INTERNET4 - AT&T WorldNet Services
91362816 Largest address span announced by an AS (/32s)
AS721 : DLA-ASNBLOCK-AS - 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').
--- 19May06 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 185055 121916 63139 34.1% All ASes
AS4323 1290 258 1032 80.0% TWTC - Time Warner Telecom,
Inc.
AS4134 1135 281 854 75.2% CHINANET-BACKBONE
No.31,Jin-rong Street
AS4755 899 80 819 91.1% VSNL-AS Videsh Sanchar Nigam
Ltd. Autonomous System
AS18566 939 218 721 76.8% COVAD - Covad Communications
Co.
AS721 993 308 685 69.0% DLA-ASNBLOCK-AS - DoD Network
Information Center
AS22773 660 54 606 91.8% CCINET-2 - Cox Communications
Inc.
AS7018 1507 963 544 36.1% ATT-INTERNET4 - AT&T WorldNet
Services
AS6197 1006 480 526 52.3% BATI-ATL - BellSouth Network
Solutions, Inc
AS19916 563 65 498 88.5% ASTRUM-0001 - OLM LLC
AS855 545 64 481 88.3% CANET-ASN-4 - Aliant Telecom
AS17488 518 60 458 88.4% HATHWAY-NET-AP Hathway IP Over
Cable Internet
AS3602 540 110 430 79.6% AS3602-RTI - Rogers Telecom
Inc.
AS9498 558 145 413 74.0% BBIL-AP BHARTI BT INTERNET
LTD.
AS17676 485 109 376 77.5% JPNIC-JP-ASN-BLOCK Japan
Network Information Center
AS15270 422 50 372 88.2% AS-PAETEC-NET - PaeTec.net -a
division of
PaeTecCommunications, Inc.
AS11492 621 269 352 56.7% CABLEONE - CABLE ONE
AS4766 653 307 346 53.0% KIXS-AS-KR Korea Telecom
AS812 376 33 343 91.2% ROGERS-CABLE - Rogers Cable
Inc.
AS22047 417 76 341 81.8% VTR BANDA ANCHA S.A.
AS6467 383 51 332 86.7% ESPIRECOMM - Xspedius
Communications Co.
AS19262 660 355 305 46.2% VZGNI-TRANSIT - Verizon
Internet Services Inc.
AS16852 354 51 303 85.6% FOCAL-CHICAGO - Focal Data
Communications of Illinois
AS18101 361 59 302 83.7% RIL-IDC Reliance Infocom Ltd
Internet Data Centre,
AS8151 707 420 287 40.6% Uninet S.A. de C.V.
AS6167 342 64 278 81.3% CELLCO-PART - Cellco
Partnership
AS14654 291 14 277 95.2% WAYPORT - Wayport
AS16814 330 56 274 83.0% NSS S.A.
AS5668 524 252 272 51.9% AS-5668 - CenturyTel Internet
Holdings, Inc.
AS3352 297 30 267 89.9% TELEFONICA-DATA-ESPANA
Internet Access Network of
TDE
AS6198 508 243 265 52.2% BATI-MIA - BellSouth Network
Solutions, Inc
Total 18884 5525 13359 70.7% Top 30 total
Possible Bogus Routes
24.246.0.0/17 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
24.246.128.0/18 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
61.4.64.0/20 AS9929 CNCNET-CN China Netcom Corp.
64.17.32.0/24 AS13488 CBWU-13488 - Continental Broadband Florida, Inc DBA WebUnited
64.17.33.0/24 AS13488 CBWU-13488 - Continental Broadband Florida, Inc DBA WebUnited
64.17.37.0/24 AS13488 CBWU-13488 - Continental Broadband Florida, Inc DBA WebUnited
64.90.128.0/20 AS6971 ESCH - Eschelon Telecommunications, Inc.
66.11.32.0/20 AS6261 VISINET - Visionary Systems, Inc.
66.37.96.0/20 AS3764 IA-HOU-AS - Internet America, Inc.
66.51.134.0/24 AS29876 LNTC - Latency LLC
66.96.0.0/20 AS3770 WORLDPATH-AS - WorldPath Internet Services
66.117.8.0/24 AS174 COGENT Cogent/PSI
66.163.96.0/20 AS25767 WAVEFORM - Waveform Technology, LLC
66.187.96.0/24 AS10026 ANC Asia Netcom Corporation
66.187.108.0/24 AS10026 ANC Asia Netcom Corporation
66.187.109.0/24 AS10026 ANC Asia Netcom Corporation
66.235.158.0/23 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
69.31.151.0/24 AS26627 AS-PILOSOFT - Pilosoft, Inc.
69.39.193.0/24 AS25973 MZIMA - Mzima Networks, Inc.
69.39.195.0/24 AS25973 MZIMA - Mzima Networks, Inc.
69.39.196.0/24 AS25973 MZIMA - Mzima Networks, Inc.
91.192.0.0/16 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS Project.
91.255.248.0/21 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS Project.
125.213.0.0/16 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street
131.64.0.0/12 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
132.0.0.0/10 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
137.0.0.0/13 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
138.136.0.0/13 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
151.135.0.0/16 AS4763 TELSTRANZ-AS TelstraClear Ltd
158.0.0.0/13 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
163.142.0.0/16 AS2500 JPNIC-ASBLOCK-AP JPNIC
183.206.196.0/24 AS2188 FR-RENATER-ASTER Reseau Regional ASTER
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 AS12582 TSF-DATANET-NGD-AS TSF MPLS VPN Services
192.69.107.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System
192.69.108.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System
192.69.177.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System
192.70.164.0/24 AS25689 NRCNET-AS - National Research Council of Canada
192.81.183.0/24 AS719 ELISA-AS Elisa Oyj
192.81.184.0/24 AS719 ELISA-AS Elisa Oyj
192.88.99.0/24 AS559 SWITCH SWITCH, Swiss Education and Research Network
192.96.36.0/24 AS5713 AFRINIC African Network Information Center
192.96.37.0/24 AS10474 AFRINIC African Network Information Center
192.96.135.0/24 AS2018 TENET - 1 - The Uninet Project
192.96.136.0/23 AS2018 TENET - 1 - The Uninet Project
192.96.140.0/24 AS2018 TENET - 1 - The Uninet Project
192.96.143.0/24 AS2018 TENET - 1 - The Uninet Project
192.96.145.0/24 AS2018 TENET - 1 - The Uninet Project
192.96.177.0/24 AS6083 POSIX-AFRICA Posix Systems
192.96.250.0/24 AS2018 TENET - 1 - The Uninet Project
192.107.104.0/24 AS6458 GUATEL
192.122.212.0/24 AS209 ASN-QWEST - Qwest
192.124.252.0/22 AS680 DFN-IP service G-WiN
192.133.6.0/24 AS10282 EQUANT-CEEUR EQUANT AS for Central and Eastern Europe region
192.153.144.0/21 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
192.168.255.255/32 AS4637 REACH Reach Network Border AS
192.172.0.0/19 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
192.188.208.0/20 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
193.36.1.0/24 AS8220 COLT COLT Telecommunications
193.37.69.0/24 AS2856 BT-UK-AS BTnet UK Regional network
193.110.77.0/24 AS3356 LEVEL3 Level 3 Communications
193.110.78.0/24 AS3356 LEVEL3 Level 3 Communications
193.110.79.0/24 AS3356 LEVEL3 Level 3 Communications
194.31.227.0/24 AS21461 TRANSFAIRNET Transfair-net GmbH Krefeld
194.59.176.0/20 AS1273 CW Cable & Wireless
194.153.156.0/24 AS24865 KMITCHELL-AS Keith Mitchell's Network
194.156.206.0/24 AS4589 EASYNET Easynet Group Plc
194.246.72.0/23 AS8893 ARTFILES-AS Artfiles New Media GmbH
195.246.216.0/22 AS15622 MEOCOM old meocom Autonomous System
198.23.26.0/24 AS4390 BELLATLANTIC-COM - Bell Atlantic, Inc.
198.54.82.0/24 AS2018 TENET - 1 - The Uninet Project
198.54.92.0/24 AS2018 TENET - 1 - The Uninet Project
198.54.222.0/24 AS2018 TENET - 1 - The Uninet Project
198.54.249.0/24 AS2018 TENET - 1 - The Uninet Project
198.54.250.0/24 AS2018 TENET - 1 - The Uninet Project
198.54.251.0/24 AS2018 TENET - 1 - The Uninet Project
198.97.72.0/21 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
198.97.80.0/20 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
198.97.96.0/19 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
198.97.240.0/20 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
198.101.4.0/22 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
198.136.32.0/20 AS19329 MCNET - Martin County Board of County Commissioners
198.161.87.0/24 AS6539 GT-BELL - Bell Canada
198.163.155.0/24 AS684 MTSAL-ASN - MTS Allstream Inc.
198.167.0.0/16 AS7456 INTERHOP - Interhop Network SERVICES Inc.
198.168.0.0/16 AS701 ALTERNET-AS - UUNET Technologies, Inc.
198.169.0.0/16 AS803 SASKTEL - SaskTel
198.199.198.0/24 AS13671 VRIS-AS-BLOCK-13661-13675 - Verizon Internet Services Inc.
198.232.133.0/24 AS23075 SKOTOS-AS - Skotos Tech, Inc
199.9.128.0/17 AS668 ASN-ASNET-NET-AS - Defense Research and Engineering Network
199.10.0.0/16 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.60.0.0/20 AS271 BCNET-AS - University of British Columbia
199.114.0.0/21 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.114.128.0/18 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.114.130.0/24 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.114.132.0/24 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.114.134.0/24 AS3541 ITSDN-U4 - DISA/UNRRA
199.114.136.0/24 AS27044 DDN-ASNBLK1 - DoD Network Information Center
199.114.138.0/24 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.114.140.0/24 AS3544 ITSDN-U7 - DISA/UNRRA
199.114.142.0/24 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.114.144.0/24 AS27064 DDN-ASNBLK1 - DoD Network Information Center
199.114.148.0/24 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.114.150.0/24 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.114.152.0/24 AS27033 DDN-ASNBLK1 - DoD Network Information Center
199.114.153.0/24 AS27034 DDN-ASNBLK1 - DoD Network Information Center
199.114.154.0/24 AS3542 ITSDN-U5 - DISA/UNRRA
199.114.160.0/24 AS1733 CENTAF-SWA - AF DDN PMO
199.121.0.0/16 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.123.0.0/18 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.123.16.0/20 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.123.80.0/21 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.189.32.0/19 AS7332 IQUEST-AS - IQuest Internet
199.202.0.0/16 AS701 ALTERNET-AS - UUNET Technologies, Inc.
199.246.116.0/24 AS813 UUNET-AS1 - UUNET Technologies, Inc.
202.9.64.0/19 AS9290 TPN-AS-AP Smart Global Network (M) Sdn Bhd
202.45.159.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
202.58.113.0/24 AS19161 INNOCOM-TELECOM - INNOCOM TELECOM
202.74.32.0/19 AS9315 CWN-AS-AP Chomanan WorldNet Co., Ltd.
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
202.90.33.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.90.40.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.90.41.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.90.42.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.90.43.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.90.44.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.93.0.0/20 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street
202.124.192.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
202.124.193.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
202.124.194.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
202.124.195.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
202.124.196.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
202.124.197.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
202.124.198.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
202.124.199.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
202.124.200.0/22 AS15412 FLAG-AS Flag Telecom Global Internet AS
202.124.204.0/24 AS15412 FLAG-AS Flag Telecom Global Internet AS
202.124.205.0/24 AS15412 FLAG-AS Flag Telecom Global Internet AS
202.124.206.0/24 AS15412 FLAG-AS Flag Telecom Global Internet AS
202.124.207.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
202.131.64.0/19 AS9381 NEWTT-IP-AP Wharf T&T Ltd.
202.148.32.0/20 AS17495 GATEWAY-AP BROADBAND WIRELESSS INTERNET SERVICE PROVIDER
202.164.100.0/24 AS18101 RIL-IDC Reliance Infocom Ltd Internet Data Centre,
203.13.171.0/24 AS1221 ASN-TELSTRA Telstra Pty Ltd
203.62.0.0/17 AS7575 AARNET-AS-AP Australian Academic and Reasearch Network (AARNet)
203.78.48.0/20 AS9299 IPG-AS-AP Philippine Long Distance Telephone Company
203.89.134.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.139.0/24 AS17911 BRAINPK-AS-AP Brain Telecommunication Ltd.
203.89.143.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.144.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.147.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.148.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.149.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.150.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.151.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.153.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.158.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.159.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.99.142.0/24 AS9826 ILINK-HK-AP iLink.net Ltd
203.111.192.0/20 AS7473 SINGTEL-AS-AP Singapore Telecom
204.29.185.0/24 AS7268 ATHENET - Athenet Internet Services
204.48.118.0/23 AS29912 CITIZENS-PROPERTY-INSURANCE-CORPORATION - Citizens Property Insurance Corporation
204.48.119.0/24 AS29912 CITIZENS-PROPERTY-INSURANCE-CORPORATION - Citizens Property Insurance Corporation
204.154.125.0/24 AS3952 TELLABS-ASN - TELLABS Operations, Inc.
204.154.126.0/24 AS3952 TELLABS-ASN - TELLABS Operations, Inc.
204.154.127.0/24 AS3952 TELLABS-ASN - TELLABS Operations, Inc.
205.150.0.0/15 AS701 ALTERNET-AS - UUNET Technologies, Inc.
206.128.104.0/21 AS11709 VIC - VIRTUAL INTERACTIVE CENTER
206.167.57.0/24 AS376 RISQ-AS - Reseau Interordinateurs Scientique Quebecois (RISQ)
206.191.64.0/18 AS15290 ALLST-15290 - Allstream Corp. Corporation Allstream
206.191.96.0/19 AS15290 ALLST-15290 - Allstream Corp. Corporation Allstream
207.231.96.0/19 AS11194 NUNETPA - NuNet Inc
208.111.0.0/16 AS4788 TMNET-AS-AP TM Net, Internet Service Provider
208.111.0.0/17 AS4788 TMNET-AS-AP TM Net, Internet Service Provider
208.111.0.0/18 AS4788 TMNET-AS-AP TM Net, Internet Service Provider
208.111.64.0/18 AS4788 TMNET-AS-AP TM Net, Internet Service Provider
208.111.128.0/17 AS4788 TMNET-AS-AP TM Net, Internet Service Provider
208.111.128.0/18 AS4788 TMNET-AS-AP TM Net, Internet Service Provider
208.111.192.0/18 AS4788 TMNET-AS-AP TM Net, Internet Service Provider
209.40.192.0/21 AS6487 CyberNet de Guatemala S.A.
209.40.200.0/21 AS6487 CyberNet de Guatemala S.A.
209.40.208.0/21 AS6487 CyberNet de Guatemala S.A.
209.40.216.0/21 AS6487 CyberNet de Guatemala S.A.
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.
209.234.0.0/18 AS3845 STATE-NET - CS&W, Inc.
216.37.110.0/23 AS4264 CERNET-ASN-BLOCK - California Education and Research Federation Network
216.71.224.0/20 AS23527 COTELLIGENCE - Cotelligence, Inc.
216.96.128.0/18 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
216.201.72.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.73.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.74.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.75.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.76.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.77.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.78.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.79.0/24 AS14709 Telefonica Moviles Panama S.A.
216.228.64.0/21 AS6295 WHIDBEY1 - Whidbey Internet Services
216.228.224.0/20 AS13674 VRIS-AS-BLOCK-13661-13675 - Verizon Internet Services Inc.
216.240.240.0/20 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
216.240.242.0/24 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
Please see http://www.cidr-report.org for the full report
------------------------------------
Copies of this report are mailed to:
nanog(a)merit.edu
eof-list(a)ripe.net
apops(a)apops.net
routing-wg(a)ripe.net
afnog(a)afnog.org
ausnog(a)ausnog.net
1
0
At the Istanbul meeting (RIPE52), RIPE decided to establish an "IP
Anti-Soofing Task Force". For motivation, charter and work-plan see
http://www.ripe.net/ripe/docs/ripe-379.html
The task force is co-chaird by Nina Hjorth Bargisen (NINA1-RIPE)
and Daniel Karrenberg (DK58).
The task force web page with information about the mailing list etc is at
http://www.ripe.net/ripe/tf/anti-spoofing/
We will give regular reports about progress on the maining list.
We are looking for volunteers to contribute to the How-To document and
experience reports. We are especially looking for contributions from
equipment vendors and network operators here. CISCO has agreed at the
RIPE meeting to provide us with material and help with this. Contacts
with other vendors are most welcome. Will those offered to help at the
RIPE meeting please get in touch again so we can plan the work.
Nina Bargisen
Daniel Karrenberg
1
0
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats(a)lists.apnic.net
If you have any comments please contact Philip Smith <pfs(a)cisco.com>.
Routing Table Report 04:00 +10GMT Sat 13 May, 2006
Analysis Summary
----------------
BGP routing table entries examined: 187926
Prefixes after maximum aggregation: 103847
Unique aggregates announced to Internet: 92133
Total ASes present in the Internet Routing Table: 22144
Origin-only ASes present in the Internet Routing Table: 19260
Origin ASes announcing only one prefix: 9194
Transit ASes present in the Internet Routing Table: 2884
Transit-only ASes present in the Internet Routing Table: 65
Average AS path length visible in the Internet Routing Table: 3.5
Max AS path length visible: 20
Max AS path prepend of ASN (34527) 16
Prefixes from unregistered ASNs in the Routing Table: 8
Unregistered ASNs in the Routing Table: 7
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 10
Number of addresses announced to Internet: 1537532840
Equivalent to 91 /8s, 164 /16s and 227 /24s
Percentage of available address space announced: 41.5
Percentage of allocated address space announced: 60.0
Percentage of available address space allocated: 69.1
Total number of prefixes smaller than registry allocations: 92673
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 39467
Total APNIC prefixes after maximum aggregation: 16505
Prefixes being announced from the APNIC address blocks: 37191
Unique aggregates announced from the APNIC address blocks: 18298
APNIC Region origin ASes present in the Internet Routing Table: 2551
APNIC Region origin ASes announcing only one prefix: 723
APNIC Region transit ASes present in the Internet Routing Table: 390
Average APNIC Region AS path length visible: 3.5
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 225571808
Equivalent to 13 /8s, 113 /16s and 243 /24s
Percentage of available APNIC address space announced: 70.5
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911
APNIC Address Blocks 58/7, 60/7, 121/8, 122/7, 124/7, 126/8, 202/7
210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 97394
Total ARIN prefixes after maximum aggregation: 57662
Prefixes being announced from the ARIN address blocks: 71480
Unique aggregates announced from the ARIN address blocks: 26470
ARIN Region origin ASes present in the Internet Routing Table: 10699
ARIN Region origin ASes announcing only one prefix: 4012
ARIN Region transit ASes present in the Internet Routing Table: 989
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 292694272
Equivalent to 17 /8s, 114 /16s and 41 /24s
Percentage of available ARIN address space announced: 75.9
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
3354-4607, 4865-5119, 5632-6655, 6912-7466
7723-8191, 10240-12287, 13312-15359, 16384-17407
18432-20479, 21504-23551, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863
ARIN Address Blocks 24/8, 63/8, 64/5, 72/6, 76/8, 199/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 37578
Total RIPE prefixes after maximum aggregation: 25126
Prefixes being announced from the RIPE address blocks: 34591
Unique aggregates announced from the RIPE address blocks: 23239
RIPE Region origin ASes present in the Internet Routing Table: 7989
RIPE Region origin ASes announcing only one prefix: 4186
RIPE Region transit ASes present in the Internet Routing Table: 1317
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 249447620
Equivalent to 14 /8s, 222 /16s and 68 /24s
Percentage of available RIPE address space announced: 78.3
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
RIPE Address Blocks 62/8, 80/5, 88/6, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 11350
Total LACNIC prefixes after maximum aggregation: 3662
Prefixes being announced from the LACNIC address blocks: 9429
Unique aggregates announced from the LACNIC address blocks: 5479
LACNIC Region origin ASes present in the Internet Routing Table: 684
LACNIC Region origin ASes announcing only one prefix: 224
LACNIC Region transit ASes present in the Internet Routing Table: 131
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 26940672
Equivalent to 1 /8s, 155 /16s and 21 /24s
Percentage of available LACNIC address space announced: 40.1
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 189/8, 190/8, 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 2131
Total AfriNIC prefixes after maximum aggregation: 892
Prefixes being announced from the AfriNIC address blocks: 1469
Unique aggregates announced from the AfriNIC address blocks: 956
AfriNIC Region origin ASes present in the Internet Routing Table: 156
AfriNIC Region origin ASes announcing only one prefix: 49
AfriNIC Region transit ASes present in the Internet Routing Table: 25
Average AfriNIC Region AS path length visible: 3.4
Max AfriNIC Region AS path length visible: 13
Number of AfriNIC addresses announced to Internet: 4072960
Equivalent to 0 /8s, 62 /16s and 38 /24s
Percentage of available AfriNIC address space announced: 12.1
AfriNIC AS Blocks 36864-37887 & ERX transfers
AfriNIC Address Blocks 41/8, 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4134 1133 7079 216 CHINANET-BACKBONE
4755 909 259 73 Videsh Sanchar Nigam Ltd. Aut
9583 900 109 16 Sify Limited
4766 683 4435 304 Korea Telecom (KIX)
1221 615 1556 471 Telstra Pty Ltd
9498 566 211 67 BHARTI BT INTERNET LTD.
7545 531 124 70 TPG Internet Pty Ltd
17488 501 31 7 Hathway IP Over Cable Interne
17676 487 7029 109 Softbank BB Corp.
9443 450 110 81 Primus Telecommunications
4802 384 81 175 Wantree Development
17849 347 22 111 Telecommunications Technology
18101 343 85 23 Reliance Infocom Ltd Internet
2907 336 1749 312 SINET Japan
17557 329 28 158 Pakistan Telecom
9929 325 221 58 China Netcom Corp.
17974 310 133 16 PT TELEKOMUNIKASI INDONESIA
7474 299 211 229 SingTel Optus Pty Ltd
9800 273 410 67 CHINA UNICOM
9837 266 78 159 Powertel Ltd
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1516 6228 968 AT&T WorldNet Services
4323 1292 734 256 Time Warner Telecom
6197 1007 620 473 BellSouth Network Solutions,
721 995 21945 304 DLA Systems Automation Center
174 957 5787 902 Cogent Communications
19029 950 151 109 New Edge Networks
18566 939 272 8 Covad Communications
701 933 8011 774 UUNET Technologies, Inc.
2386 873 521 673 AT&T Data Communications Serv
1239 847 2805 599 Sprint
209 707 3563 555 Qwest
19262 699 2104 165 Verizon Global Networks
20115 692 606 373 Charter Communications
22773 660 1745 45 Cox Communications, Inc.
7011 634 218 412 Citizens Utilities
11492 630 86 23 Cable One
852 582 1085 384 Telus Advanced Communications
19916 563 49 54 OLM LLC
855 542 244 64 Canadian Research Network
3602 537 127 109 Sprint Canada, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 578 1952 454 UUNET - Commercial IP service
3301 307 1071 293 TeliaNet Sweden
3352 296 1628 30 Ibernet, Internet Access Netw
8220 294 474 267 COLT Telecommunications
3320 286 3989 240 Deutsche Telekom AG
680 245 2025 242 DFN-IP service G-WiN
3246 234 504 224 Song Networks
6746 230 89 206 Dynamic Network Technologies,
8708 217 275 200 Romania Data Systems S.A.
24863 209 40 9 LINKdotNET AS number
8551 202 198 24 Bezeq International
3215 198 1664 94 France Telecom Transpac
3269 198 2134 72 TELECOM ITALIA
1257 192 742 167 SWIPnet Swedish IP Network
8866 180 37 16 Bulgarian Telecommunication C
6830 175 765 35 UPC Distribution Services
30890 175 16 63 SC Kappa Invexim SRL
786 171 1778 171 The JANET IP Service
5400 170 347 140 BT Ignite European Backbone
9121 168 931 27 TTnet Autonomous System
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 708 1083 222 UniNet S.A. de C.V.
22047 417 158 11 VTR PUNTO NET S.A.
11172 324 110 84 Servicios Alestra S.A de C.V
16814 318 20 8 NSS, S.A.
6147 262 126 22 Telefonica Del Peru
14117 205 12 6 Telefonica del Sur S.A.
10481 181 72 8 Prima S.A.
7303 164 77 21 Telecom Argentina Stet-France
11556 132 80 4 Cable-Wireless Panama
21826 132 16 21 INTERCABLE
6503 129 149 78 AVANTEL, S.A.
19169 125 8 27 Telconet
14259 116 10 12 GTD Internet S.A.
23216 112 21 9 RAMtelecom Telecomunicaciones
5639 109 12 9 Telecommunications Services o
6505 109 88 79 Global One Communicaoes Ltda
7910 105 7 10 ANDINET ON LINE
19429 103 58 44 E.T.B.
18822 98 7 9 TELEFONICA MANQUEHUE
14571 97 25 3 Internet Group do Brasil
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 278 803 233 The Internet Solution
8452 168 60 7 TEDATA
6713 145 135 11 Itissalat Al-MAGHRIB
2018 123 314 104 Tertiary Education Network
5536 121 8 18 Internet Egypt Network
24835 117 50 7 RAYA Telecom - Egypt
33783 105 6 2 EEPAD TISP TELECOM & INTERNET
2905 73 155 66 The Internetworking Company o
20928 57 16 2 Noor Advanced Technologies AS
15475 53 84 4 Nile Online
5713 39 294 35 Telkom SA Ltd
15706 31 8 3 Sudatel Internet Exchange Aut
33774 30 7 20 AS Number for Telecom Algeria
12455 28 6 3 Jambonet Autonomous system
23889 26 8 11 MAURITIUS TELECOM
8524 24 1 4 AUCEGYPT Autonomous System
16637 24 14 22 Johnnic e-Ventures
10798 22 1 13 Standard Bank of South Africa
2561 19 6 2 Egyptian Universities Network
21280 19 5 5 Swift Global Kenya Ltd.Is an
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1292 1036 Time Warner Telecom
18566 939 931 Covad Communications
4134 1133 917 CHINANET-BACKBONE
9583 900 884 Sify Limited
19029 950 841 New Edge Networks
4755 909 836 Videsh Sanchar Nigam Ltd. Aut
721 995 691 DLA Systems Automation Center
22773 660 615 Cox Communications, Inc.
11492 630 607 Cable One
6197 1007 534 BellSouth Network Solutions,
19262 699 534 Verizon Global Networks
19916 563 509 OLM LLC
5668 531 508 CenturyTel Internet Holdings,
9498 566 499 BHARTI BT INTERNET LTD.
17488 501 494 Hathway IP Over Cable Interne
8151 708 486 UniNet S.A. de C.V.
855 542 478 Canadian Research Network
7545 531 461 TPG Internet Pty Ltd
3602 537 428 Sprint Canada, Inc.
22047 417 406 VTR PUNTO NET S.A.
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
65241 PRIVATE 65.90.71.0/24 10794 Bank of America
65128 PRIVATE 193.110.50.0/24 24652 Juniper Networks, Eu
37890 UNALLOCATED 202.179.160.0/20 17930 Japan Digital Serve
24409 UNALLOCATED 203.119.29.0/24 9808 Guangdong Mobile Com
65280 PRIVATE 203.197.161.0/24 4755 Videsh Sanchar Nigam
65280 PRIVATE 203.200.14.0/24 4755 Videsh Sanchar Nigam
65280 PRIVATE 203.200.21.0/24 4755 Videsh Sanchar Nigam
36366 UNALLOCATED 216.130.247.0/24 174 Cogent Communication
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 721 DLA Systems Automation Center
137.0.0.0/13 721 DLA Systems Automation Center
158.0.0.0/13 721 DLA Systems Automation Center
183.206.196.0/24 2188 FR-RENATER-ASTER
192.44.0.0/24 5501 Fraunhofer Gesellschaft
192.44.0.0/19 702 UUNET - Commercial IP service
192.70.164.0/24 25689 National Research Council of
192.84.205.0/24 719 LANLINK autonomous system
192.119.135.0/24 270 NASA
192.172.0.0/19 721 DLA Systems Automation Center
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:9 /10:9 /11:28 /12:90
/13:202 /14:361 /15:706 /16:8815 /17:3200 /18:5296
/19:11633 /20:13071 /21:11325 /22:14552 /23:15646 /24:101883
/25:387 /26:267 /27:214 /28:64 /29:70 /30:49
/31:0 /32:31
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 922 939 Covad Communications
19029 881 950 New Edge Networks
7018 801 1516 AT&T WorldNet Services
6197 796 1007 BellSouth Network Solutions,
9583 728 900 Sify Limited
4323 634 1292 Time Warner Telecom
11492 621 630 Cable One
2386 597 873 AT&T Data Communications Serv
19916 557 563 OLM LLC
7011 543 634 Citizens Utilities
4766 493 683 Korea Telecom (KIX)
855 416 542 Canadian Research Network
5668 413 531 CenturyTel Internet Holdings,
15270 394 425 PaeTec.net -a division of Pae
1239 385 847 Sprint
702 359 578 UUNET - Commercial IP service
6198 357 508 BellSouth Network Solutions,
6517 357 387 Yipes Communications, Inc.
8151 351 708 UniNet S.A. de C.V.
17849 347 347 Telecommunications Technology
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:8 8:41 12:1627 13:1 15:12 16:3
17:3 18:4 20:43 24:739 25:1 30:2
32:59 38:213 40:54 41:1 44:3 47:6
52:4 55:1 56:3 57:25 58:149 59:192
60:181 61:853 62:762 63:1926 64:3171 65:2254
66:3002 67:608 68:657 69:1490 70:328 71:82
72:702 73:23 74:34 80:773 81:630 82:602
83:391 84:386 85:527 86:393 87:331 88:84
89:185 124:273 125:383 128:159 129:187 130:114
131:311 132:33 133:8 134:159 135:46 136:178
137:75 138:198 139:70 140:468 141:136 142:373
143:164 144:227 145:39 146:326 147:136 148:331
149:186 150:114 151:85 152:68 153:107 154:6
155:198 156:98 157:145 158:161 159:171 160:88
161:75 162:261 163:146 164:180 165:213 166:163
167:246 168:488 169:128 170:336 171:14 183:1
190:72 192:5751 193:3381 194:2613 195:1828 196:845
198:3900 199:3229 200:4453 201:934 202:6611 203:6860
204:3893 205:2089 206:2401 207:2948 208:2060 209:3788
210:1912 211:682 212:1198 213:1468 214:357 215:41
216:4147 217:1157 218:272 219:193 220:654 221:358
222:147
End of report
2
1
BGP Update Report
Interval: 28-Apr-06 -to- 11-May-06 (14 days)
Observation Point: BGP Peering with AS4637
TOP 20 Unstable Origin AS
Rank ASN Upds % Upds/Pfx AS-Name
1 - AS855 47228 4.1% 85.6 -- CANET-ASN-4 - Aliant Telecom
2 - AS7015 29981 2.6% 10.2 -- CCCH-AS2 - Comcast Cable Communications Holdings, Inc
3 - AS9121 20524 1.8% 32.6 -- TTNET TTnet Autonomous System
4 - AS17974 14648 1.3% 44.9 -- TELKOMNET-AS2-AP PT TELEKOMUNIKASI INDONESIA
5 - AS3475 12670 1.1% 452.5 -- LANT-AFLOAT - NCTAMS LANT DET HAMPTON ROADS
6 - AS33783 9846 0.9% 93.8 --
7 - AS702 9415 0.8% 12.4 -- AS702 MCI EMEA - Commercial IP service provider in Europe
8 - AS6478 9083 0.8% 6.6 -- ATT-INTERNET3 - AT&T WorldNet Services
9 - AS10139 8754 0.8% 66.8 -- MERIDIAN-PH-AP Meridian Telekoms
10 - AS577 8693 0.8% 35.1 -- BACOM - Bell Canada
11 - AS15105 8525 0.8% 38.4 -- NETWORKTELEPHONE - Network Telephone Corporation
12 - AS14410 7709 0.7% 1541.8 -- DALTON - MCM, Inc., DBA: Internet@Dalton
13 - AS5839 7263 0.6% 242.1 -- DDN-ASNBLK - DoD Network Information Center
14 - AS7018 7105 0.6% 4.9 -- ATT-INTERNET4 - AT&T WorldNet Services
15 - AS8151 6647 0.6% 9.3 -- Uninet S.A. de C.V.
16 - AS5803 6590 0.6% 74.0 -- DDN-ASNBLK - DoD Network Information Center
17 - AS23918 6557 0.6% 49.3 -- CBB-BGP-IBARAKI Connexion By Boeing Ibaraki AS
18 - AS18231 6410 0.6% 47.8 -- EXATT-AS-AP Exatt Technologies Private Ltd.
19 - AS18049 6291 0.6% 49.1 -- TINP-TW Taiwan Infrastructure Network Technologie
20 - AS9929 6237 0.6% 19.8 -- CNCNET-CN China Netcom Corp.
TOP 20 Unstable Origin AS (Updates per announced prefix)
Rank ASN Upds % Upds/Pfx AS-Name
1 - AS21027 3480 0.3% 3480.0 -- ASN-PARADORES PARADORES Autonomous System
2 - AS7684 2656 0.2% 2656.0 -- SAKURA-A SAKURA Internet Inc.
3 - AS14410 7709 0.7% 1541.8 -- DALTON - MCM, Inc., DBA: Internet@Dalton
4 - AS36565 1236 0.1% 1236.0 -- COUNTY-OF-MONTGOMERY-PA - County of Montgomery
5 - AS16705 2444 0.2% 1222.0 -- STORAGEAPPS - Storage Apps Inc.
6 - AS34382 1145 0.1% 1145.0 -- ASSYRUS-SRL-AS Assyrus Srl Maintainer
7 - AS34378 915 0.1% 915.0 -- RUG-AS Razguliay-UKRROS Group
8 - AS19982 3546 0.3% 886.5 -- TOWERSTREAM-PROV - Towerstream
9 - AS3043 2959 0.3% 739.8 -- AMPHIB-AS - Amphibian Media Corporation
10 - AS21260 1461 0.1% 730.5 -- POSITIVE-INTERNET-UK-AS Positive Internet UK AS
11 - AS23917 1318 0.1% 659.0 -- BRIBIE-NET-AS-AP Bribie Island Net Multihomed, Brisbane
12 - AS25816 5202 0.5% 578.0 -- TOURO - Touro College
13 - AS10571 1481 0.1% 493.7 -- GEOACCESS-AS - GeoAccess
14 - AS3475 12670 1.1% 452.5 -- LANT-AFLOAT - NCTAMS LANT DET HAMPTON ROADS
15 - AS25435 1225 0.1% 408.3 -- TELESONIQUE-AS Telesonique
16 - AS26138 367 0.0% 367.0 -- QUIK-INTERNET-TICOPA - Quik Internet of Ticopa
17 - AS31613 357 0.0% 357.0 -- CLNEVA-AS JSC Comline-Neva
18 - AS39017 356 0.0% 356.0 -- AUDIOTEX Kifissias 10-12
19 - AS33871 3461 0.3% 346.1 -- NORILSK-TELECOM-AS Norilsk-Telecom Ltd.
20 - AS33253 692 0.1% 346.0 -- OURAYNET - OurayNet
TOP 20 Unstable Prefixes
Rank Prefix Upds % Origin AS -- AS Name
1 - 62.81.240.0/24 3480 0.3% AS21027 -- ASN-PARADORES PARADORES Autonomous System
2 - 209.140.24.0/24 2956 0.2% AS3043 -- AMPHIB-AS - Amphibian Media Corporation
3 - 81.212.141.0/24 2711 0.2% AS9121 -- TTNET TTnet Autonomous System
4 - 59.106.255.0/24 2656 0.2% AS7684 -- SAKURA-A SAKURA Internet Inc.
5 - 81.212.149.0/24 2508 0.2% AS9121 -- TTNET TTnet Autonomous System
6 - 81.212.197.0/24 2169 0.2% AS9121 -- TTNET TTnet Autonomous System
7 - 61.0.0.0/8 1937 0.1% AS4678 -- FINE CANON NETWORK COMMUNICATIONS INC.
8 - 61.8.114.0/24 1693 0.1% AS9476 -- INTRAPOWER-AS-AP Intrapower
9 - 65.119.232.0/24 1557 0.1% AS14410 -- DALTON - MCM, Inc., DBA: Internet@Dalton
10 - 205.160.25.0/24 1556 0.1% AS14410 -- DALTON - MCM, Inc., DBA: Internet@Dalton
11 - 208.46.29.0/24 1553 0.1% AS14410 -- DALTON - MCM, Inc., DBA: Internet@Dalton
12 - 65.174.4.0/23 1522 0.1% AS14410 -- DALTON - MCM, Inc., DBA: Internet@Dalton
13 - 207.43.166.0/23 1521 0.1% AS14410 -- DALTON - MCM, Inc., DBA: Internet@Dalton
14 - 80.87.128.0/20 1459 0.1% AS21260 -- POSITIVE-INTERNET-UK-AS Positive Internet UK AS
15 - 205.70.12.0/24 1402 0.1% AS3475 -- LANT-AFLOAT - NCTAMS LANT DET HAMPTON ROADS
16 - 205.70.9.0/24 1401 0.1% AS3475 -- LANT-AFLOAT - NCTAMS LANT DET HAMPTON ROADS
17 - 205.70.8.0/24 1400 0.1% AS3475 -- LANT-AFLOAT - NCTAMS LANT DET HAMPTON ROADS
18 - 205.70.7.0/24 1399 0.1% AS3475 -- LANT-AFLOAT - NCTAMS LANT DET HAMPTON ROADS
19 - 205.70.1.0/24 1398 0.1% AS3475 -- LANT-AFLOAT - NCTAMS LANT DET HAMPTON ROADS
20 - 205.70.13.0/24 1397 0.1% AS3475 -- LANT-AFLOAT - NCTAMS LANT DET HAMPTON ROADS
Details at http://bgpupdates.potaroo.net
------------------------------------
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1
0
This report has been generated at Fri May 12 21:49:12 2006 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
05-05-06 184095 121215
06-05-06 184004 121222
07-05-06 183996 121206
08-05-06 183793 121142
09-05-06 184023 121450
10-05-06 184270 121325
11-05-06 184062 121498
12-05-06 184436 121488
AS Summary
22046 Number of ASes in routing system
9201 Number of ASes announcing only one prefix
1499 Largest number of prefixes announced by an AS
AS7018 : ATT-INTERNET4 - AT&T WorldNet Services
91362816 Largest address span announced by an AS (/32s)
AS721 : DLA-ASNBLOCK-AS - 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').
--- 12May06 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 184348 121476 62872 34.1% All ASes
AS4323 1289 260 1029 79.8% TWTC - Time Warner Telecom,
Inc.
AS4134 1122 279 843 75.1% CHINANET-BACKBONE
No.31,Jin-rong Street
AS18566 939 218 721 76.8% COVAD - Covad Communications
Co.
AS4755 911 217 694 76.2% VSNL-AS Videsh Sanchar Nigam
Ltd. Autonomous System
AS721 993 309 684 68.9% DLA-ASNBLOCK-AS - DoD Network
Information Center
AS22773 657 54 603 91.8% CCINET-2 - Cox Communications
Inc.
AS7018 1499 962 537 35.8% ATT-INTERNET4 - AT&T WorldNet
Services
AS6197 1007 481 526 52.2% BATI-ATL - BellSouth Network
Solutions, Inc
AS19916 563 65 498 88.5% ASTRUM-0001 - OLM LLC
AS855 542 64 478 88.2% CANET-ASN-4 - Aliant Telecom
AS17488 501 58 443 88.4% HATHWAY-NET-AP Hathway IP Over
Cable Internet
AS3602 538 109 429 79.7% AS3602-RTI - Rogers Telecom
Inc.
AS9498 567 150 417 73.5% BBIL-AP BHARTI BT INTERNET
LTD.
AS17676 487 109 378 77.6% JPNIC-JP-ASN-BLOCK Japan
Network Information Center
AS15270 420 49 371 88.3% AS-PAETEC-NET - PaeTec.net -a
division of
PaeTecCommunications, Inc.
AS11492 632 276 356 56.3% CABLEONE - CABLE ONE
AS4766 651 307 344 52.8% KIXS-AS-KR Korea Telecom
AS812 376 33 343 91.2% ROGERS-CABLE - Rogers Cable
Inc.
AS22047 417 76 341 81.8% VTR BANDA ANCHA S.A.
AS19262 654 329 325 49.7% VZGNI-TRANSIT - Verizon
Internet Services Inc.
AS6467 367 46 321 87.5% ESPIRECOMM - Xspedius
Communications Co.
AS18101 344 28 316 91.9% RIL-IDC Reliance Infocom Ltd
Internet Data Centre,
AS8151 705 401 304 43.1% Uninet S.A. de C.V.
AS16852 354 51 303 85.6% FOCAL-CHICAGO - Focal Data
Communications of Illinois
AS5668 530 249 281 53.0% AS-5668 - CenturyTel Internet
Holdings, Inc.
AS6167 340 64 276 81.2% CELLCO-PART - Cellco
Partnership
AS3352 296 30 266 89.9% TELEFONICA-DATA-ESPANA
Internet Access Network of
TDE
AS6198 508 242 266 52.4% BATI-MIA - BellSouth Network
Solutions, Inc
AS16814 318 57 261 82.1% NSS S.A.
AS19115 343 83 260 75.8% CHARTER-LEBANON - Charter
Communications
Total 18870 5656 13214 70.0% Top 30 total
Possible Bogus Routes
24.246.0.0/17 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
24.246.128.0/18 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
61.4.64.0/20 AS9929 CNCNET-CN China Netcom Corp.
64.17.32.0/24 AS13488 CBWU-13488 - Continental Broadband Florida, Inc DBA WebUnited
64.17.33.0/24 AS13488 CBWU-13488 - Continental Broadband Florida, Inc DBA WebUnited
64.17.37.0/24 AS13488 CBWU-13488 - Continental Broadband Florida, Inc DBA WebUnited
64.90.128.0/20 AS6971 ESCH - Eschelon Telecommunications, Inc.
66.11.32.0/20 AS6261 VISINET - Visionary Systems, Inc.
66.37.96.0/20 AS3764 IA-HOU-AS - Internet America, Inc.
66.51.134.0/24 AS29876 LNTC - Latency LLC
66.96.0.0/20 AS3770 WORLDPATH-AS - WorldPath Internet Services
66.117.8.0/24 AS174 COGENT Cogent/PSI
66.163.96.0/20 AS25767 WAVEFORM - Waveform Technology, LLC
66.187.96.0/24 AS10026 ANC Asia Netcom Corporation
66.187.108.0/24 AS10026 ANC Asia Netcom Corporation
66.187.109.0/24 AS10026 ANC Asia Netcom Corporation
66.235.158.0/23 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
69.31.151.0/24 AS26627 AS-PILOSOFT - Pilosoft, Inc.
69.39.193.0/24 AS25973 MZIMA - Mzima Networks, Inc.
69.39.195.0/24 AS25973 MZIMA - Mzima Networks, Inc.
69.39.196.0/24 AS25973 MZIMA - Mzima Networks, Inc.
81.93.176.0/20 AS2914 NTTA-2914 - NTT America, Inc.
81.93.208.0/20 AS2914 NTTA-2914 - NTT America, Inc.
89.107.160.0/21 AS16097 HLKOMM HL komm Telekommunikations GmbH
91.192.0.0/16 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS Project.
91.255.248.0/21 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS Project.
125.213.0.0/16 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street
131.64.0.0/12 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
132.0.0.0/10 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
137.0.0.0/13 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
138.136.0.0/13 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
151.135.0.0/16 AS4763 TELSTRANZ-AS TelstraClear Ltd
158.0.0.0/13 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
163.142.0.0/16 AS2500 JPNIC-ASBLOCK-AP JPNIC
183.206.196.0/24 AS2188 FR-RENATER-ASTER Reseau Regional ASTER
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 AS12582 TSF-DATANET-NGD-AS TSF MPLS VPN Services
192.69.107.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System
192.69.108.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System
192.69.177.0/24 AS5515 SONERA-GLOBAL-IP Sonera Solution Autonomous System
192.70.164.0/24 AS25689 NRCNET-AS - National Research Council of Canada
192.81.183.0/24 AS719 ELISA-AS Elisa Oyj
192.81.184.0/24 AS719 ELISA-AS Elisa Oyj
192.88.99.0/24 AS559 SWITCH SWITCH, Swiss Education and Research Network
192.96.36.0/24 AS5713 AFRINIC African Network Information Center
192.96.37.0/24 AS10474 AFRINIC African Network Information Center
192.96.135.0/24 AS2018 TENET - 1 - The Uninet Project
192.96.136.0/23 AS2018 TENET - 1 - The Uninet Project
192.96.140.0/24 AS2018 TENET - 1 - The Uninet Project
192.96.143.0/24 AS2018 TENET - 1 - The Uninet Project
192.96.145.0/24 AS2018 TENET - 1 - The Uninet Project
192.96.177.0/24 AS6083 AFRINIC African Network Information Center
192.96.250.0/24 AS2018 TENET - 1 - The Uninet Project
192.107.104.0/24 AS6458 GUATEL
192.122.212.0/24 AS209 ASN-QWEST - Qwest
192.124.252.0/22 AS680 DFN-IP service G-WiN
192.133.6.0/24 AS10282 EQUANT-CEEUR EQUANT AS for Central and Eastern Europe region
192.153.144.0/21 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
192.168.255.255/32 AS4637 REACH Reach Network Border AS
192.172.0.0/19 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
192.188.208.0/20 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
193.36.1.0/24 AS8220 COLT COLT Telecommunications
193.37.69.0/24 AS2856 BT-UK-AS BTnet UK Regional network
193.110.77.0/24 AS3356 LEVEL3 Level 3 Communications
193.110.78.0/24 AS3356 LEVEL3 Level 3 Communications
193.110.79.0/24 AS3356 LEVEL3 Level 3 Communications
194.31.227.0/24 AS21461 TRANSFAIRNET Transfair-net GmbH Krefeld
194.59.176.0/20 AS1273 CW Cable & Wireless
194.153.156.0/24 AS24865 KMITCHELL-AS Keith Mitchell's Network
194.156.206.0/24 AS4589 EASYNET Easynet Group Plc
194.246.72.0/23 AS8893 ARTFILES-AS Artfiles New Media GmbH
195.246.216.0/22 AS15622 MEOCOM old meocom Autonomous System
198.23.26.0/24 AS4390 BELLATLANTIC-COM - Bell Atlantic, Inc.
198.54.82.0/24 AS2018 TENET - 1 - The Uninet Project
198.54.92.0/24 AS2018 TENET - 1 - The Uninet Project
198.54.222.0/24 AS2018 TENET - 1 - The Uninet Project
198.54.249.0/24 AS2018 TENET - 1 - The Uninet Project
198.54.250.0/24 AS2018 TENET - 1 - The Uninet Project
198.54.251.0/24 AS2018 TENET - 1 - The Uninet Project
198.97.72.0/21 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
198.97.80.0/20 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
198.97.96.0/19 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
198.97.240.0/20 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
198.101.4.0/22 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
198.136.32.0/20 AS19329 MCNET - Martin County Board of County Commissioners
198.161.87.0/24 AS6539 GT-BELL - Bell Canada
198.163.155.0/24 AS684 MTSAL-ASN - MTS Allstream Inc.
198.167.0.0/16 AS7456 INTERHOP - Interhop Network SERVICES Inc.
198.168.0.0/16 AS701 ALTERNET-AS - UUNET Technologies, Inc.
198.169.0.0/16 AS803 SASKTEL - SaskTel
198.199.198.0/24 AS13671 VRIS-AS-BLOCK-13661-13675 - Verizon Internet Services Inc.
198.232.133.0/24 AS23075 SKOTOS-AS - Skotos Tech, Inc
199.9.128.0/17 AS668 ASN-ASNET-NET-AS - Defense Research and Engineering Network
199.10.0.0/16 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.60.0.0/20 AS271 BCNET-AS - University of British Columbia
199.114.0.0/21 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.114.128.0/18 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.114.130.0/24 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.114.132.0/24 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.114.134.0/24 AS3541 ITSDN-U4 - DISA/UNRRA
199.114.136.0/24 AS27044 DDN-ASNBLK1 - DoD Network Information Center
199.114.138.0/24 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.114.140.0/24 AS3544 ITSDN-U7 - DISA/UNRRA
199.114.142.0/24 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.114.144.0/24 AS27064 DDN-ASNBLK1 - DoD Network Information Center
199.114.148.0/24 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.114.150.0/24 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.114.152.0/24 AS27033 DDN-ASNBLK1 - DoD Network Information Center
199.114.153.0/24 AS27034 DDN-ASNBLK1 - DoD Network Information Center
199.114.154.0/24 AS3542 ITSDN-U5 - DISA/UNRRA
199.114.160.0/24 AS1733 CENTAF-SWA - AF DDN PMO
199.121.0.0/16 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.123.0.0/18 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.123.16.0/20 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.123.80.0/21 AS721 DLA-ASNBLOCK-AS - DoD Network Information Center
199.189.32.0/19 AS7332 IQUEST-AS - IQuest Internet
199.202.0.0/16 AS701 ALTERNET-AS - UUNET Technologies, Inc.
199.246.116.0/24 AS813 UUNET-AS1 - UUNET Technologies, Inc.
202.9.64.0/19 AS9290 TPN-AS-AP Smart Global Network (M) Sdn Bhd
202.45.159.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
202.58.113.0/24 AS19161 INNOCOM-TELECOM - INNOCOM TELECOM
202.74.32.0/19 AS9315 CWN-AS-AP Chomanan WorldNet Co., Ltd.
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
202.90.33.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.90.40.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.90.41.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.90.42.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.90.43.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.90.44.0/24 AS9830 SWIFTONLINE-AS-AP SWIFT ONLINE BORDER AS
202.93.0.0/20 AS4134 CHINANET-BACKBONE No.31,Jin-rong Street
202.131.64.0/19 AS9381 NEWTT-IP-AP Wharf T&T Ltd.
202.148.32.0/20 AS17495 GATEWAY-AP BROADBAND WIRELESSS INTERNET SERVICE PROVIDER
202.164.100.0/24 AS18101 RIL-IDC Reliance Infocom Ltd Internet Data Centre,
203.13.171.0/24 AS1221 ASN-TELSTRA Telstra Pty Ltd
203.62.0.0/17 AS7575 AARNET-AS-AP Australian Academic and Reasearch Network (AARNet)
203.78.48.0/20 AS9299 IPG-AS-AP Philippine Long Distance Telephone Company
203.89.134.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.139.0/24 AS17911 BRAINPK-AS-AP Brain Telecommunication Ltd.
203.89.143.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.144.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.147.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.148.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.149.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.150.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.151.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.153.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.158.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.89.159.0/24 AS17557 PKTELECOM-AS-AP Pakistan Telecom
203.99.142.0/24 AS9826 ILINK-HK-AP iLink.net Ltd
203.111.192.0/20 AS7473 SINGTEL-AS-AP Singapore Telecom
204.29.185.0/24 AS7268 ATHENET - Athenet Internet Services
204.48.118.0/23 AS29912 CITIZENS-PROPERTY-INSURANCE-CORPORATION - Citizens Property Insurance Corporation
204.48.119.0/24 AS29912 CITIZENS-PROPERTY-INSURANCE-CORPORATION - Citizens Property Insurance Corporation
204.154.125.0/24 AS3952 TELLABS-ASN - TELLABS Operations, Inc.
204.154.126.0/24 AS3952 TELLABS-ASN - TELLABS Operations, Inc.
204.154.127.0/24 AS3952 TELLABS-ASN - TELLABS Operations, Inc.
205.150.0.0/15 AS701 ALTERNET-AS - UUNET Technologies, Inc.
206.128.104.0/21 AS11709 VIC - VIRTUAL INTERACTIVE CENTER
206.167.57.0/24 AS376 RISQ-AS - Reseau Interordinateurs Scientique Quebecois (RISQ)
206.191.64.0/18 AS15290 ALLST-15290 - Allstream Corp. Corporation Allstream
206.191.96.0/19 AS15290 ALLST-15290 - Allstream Corp. Corporation Allstream
207.231.96.0/19 AS11194 NUNETPA - NuNet Inc
209.40.192.0/21 AS6487 CyberNet de Guatemala S.A.
209.40.200.0/21 AS6487 CyberNet de Guatemala S.A.
209.40.208.0/21 AS6487 CyberNet de Guatemala S.A.
209.40.216.0/21 AS6487 CyberNet de Guatemala S.A.
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.
209.234.0.0/18 AS3845 STATE-NET - CS&W, Inc.
216.37.110.0/23 AS4264 CERNET-ASN-BLOCK - California Education and Research Federation Network
216.71.224.0/20 AS23527 COTELLIGENCE - Cotelligence, Inc.
216.96.128.0/18 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
216.201.72.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.73.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.74.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.75.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.76.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.77.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.78.0/24 AS14709 Telefonica Moviles Panama S.A.
216.201.79.0/24 AS14709 Telefonica Moviles Panama S.A.
216.228.64.0/21 AS6295 WHIDBEY1 - Whidbey Internet Services
216.228.224.0/20 AS13674 VRIS-AS-BLOCK-13661-13675 - Verizon Internet Services Inc.
216.240.240.0/20 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
216.240.242.0/24 AS7018 ATT-INTERNET4 - AT&T WorldNet Services
Please see http://www.cidr-report.org for the full report
------------------------------------
Copies of this report are mailed to:
nanog(a)merit.edu
eof-list(a)ripe.net
apops(a)apops.net
routing-wg(a)ripe.net
afnog(a)afnog.org
ausnog(a)ausnog.net
1
0
[routing-wg]Correction: New RIPE Document Available: RIPE 378
by RIPE NCC Document Announcement Service 12 May '06
by RIPE NCC Document Announcement Service 12 May '06
12 May '06
[Apologies for duplicate e-mails]
Dear Colleagues,
Yesterday, you received an e-mail announcing a new RIPE Document, RIPE
378. Unfortunately, the URL given was incorrect.
You can find RIPE 378 at:
http://www.ripe.net/ripe/docs/ripe-378.html
We apologise for any inconvenience caused.
Kind regards,
Jeroen Bet
RIPE NCC Content Webmaster
1
0
[routing-wg]New RIPE Document Available: RIPE 378
by RIPE NCC Document Announcement Service 11 May '06
by RIPE NCC Document Announcement Service 11 May '06
11 May '06
[Apologies for duplicate e-mails]
New RIPE Document Announcement
---------------------------------------------------------
A new document is available in the RIPE Document Store.
Short content description
---------------------------------------
RIPE 378 discusses Route Flap Damping and recommends acceptable practices for ISPs that are considering deploying Route Flap Damping.
Accessing the RIPE Document Store
--------------------------------------------------------
You can access the RIPE document in HTML format at:
http://test-www.ripe.net/ripe/docs/ripe-378.html
The RIPE Document Store is also available via anonymous FTP to ftp.ripe.net in the directory ripe/docs.
The URL for RIPE 378 on the FTP-server is:
ftp://ftp.ripe.net/ripe/docs/ripe-378.txt
Kind Regards,
Jeroen Bet
RIPE NCC Content Webmaster
1
0
09 May '06
Dear Colleagues
The RIPE NCC Training Services Department invites you to register for one
of our upcoming Routing Registry Training Courses:
Date: Friday 4 August 2006
Time: 0900 - 1700
Location: Warsaw, Poland
And
Date: Friday 1 September 2006
Time: 0900 - 1700
Location: Reykjavik, Iceland
The main objective of the "Routing Registry Training Course" is to
familiarise the LIRs with the features of the Routing Registry, while
introducing the relevant tools and services of the RIPE NCC.
The course also offers practical exercises.
OVERVIEW OF TOPICS COVERED IN THE COURSE:
- Routing Registry as a part of the RIPE Whois Database and the
Internet Routing Registry (IRR)
- Specifying routing policies using (RPSL)
Routing Policy Specification Language and the RtConfig tool
- IRRToolSet
- Routing Information Service (RIS)
- Routing Registry Consistency Check Project
Please note that this is an advanced course. It will:
- NOT teach the basics of routing
- NOT teach the basics of RIPE Database operations
- NOT describe how to receive Internet resources from the RIPE NCC
- NOT describe how to operate a Local Internet Registry (LIR)
The target audience of the course are technical staff of LIRs: e.g.
network operators, engineers etc. This course is not intended for
administrative or management staff (e.g. Hostmasters) .
It is assumed that all attendees will be familiar with
Border Gateway Protocol routing and with the RIPE Database
(i.e. creating/modifying objects).
This course is based on interactive exercises in a local network set-up.
Please bring your laptops equipped with the following:
- A working Ethernet card,
- Three meters of Ethernet cable,
- A secure connection client,
- A web browser.
Please be prepared to share your laptop (or at least allow another
attendee to "look over your shoulder") if necessary.
The course is free of charge. We provide lunch and printed training materials.
We do not cover any of your travel expenses or accommodation.
We give all of our training courses in English.
You can find more information about the course at:
http://www.ripe.net/training/rr/
How to register:
---------------------
You can register up to two people from your LIR for each course.
(If there are places left nearer the time of the course, you can register more people).
To register for this course, you can either use the LIR Portal at:
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Or the online registration form on our website:
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If you have any questions, send an e-mail to <training(a)ripe.net>.
Kind regards,
Rumy Kanis
Training Services Manager
RIPE NCC
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08 May '06
Dear Colleagues,
Please find attached the draft of a document obsoleting RIPE-229 "RIPE
Routing-WG Recommendations for Coordinated Route-flap Damping
Parameters".
While we will discuss this document at the WG meeting on Thursday, we'd
welcome and appreciate feedback from the mailing list.
Thanks!
Philip Smith & Christian Panigl
--
RIPE Routing-WG Recommendations on Route-flap Damping
Philip Smith
Christian Panigl
Document ID: TBA
Date Published: TBA
Obsoletes: ripe-229, ripe-210, ripe-178
Abstract
This document discusses Route Flap Damping and recommends acceptable
practices for ISPs who are considering deploying Route Flap Damping.
Table of Contents
1. Introduction
1.1 Background
1.2 Coordination of Flap Damping Parameters
2. Current Status of Route Flap Damping
2.1 Impeded Convergence
2.2 Updates transiting the network
3. Solutions
4. Recommendation
5. Conclusion
6. Acknowledgements
7. References
8. Authors
1. Introduction
Route Flap Damping (RFD) [1] is a mechanism for BGP speaking routers
intended to improve the overall stability of the Internet routing
table and reduce the load on the CPUs of the core routers.
Unfortunately, due to the dynamics of the protocol, common simple
configurations can do more harm than good, see [3,4].
1.1 Background
In the early 1990s the accelerating growth in the number of prefixes
being announced to the Internet (often due to inadequate
prefix-aggregation), the denser meshing through multiple inter-provider
paths, and increased instabilities started to cause significant impact
on the performance and efficiency of the Internet backbone routers.
Every time a routing prefix became unreachable because of a single
line-flap, the withdrawal was advertised to the whole core Internet
and handled by every single router that carried the full Internet
routing table.
It was soon realized that the increasing routing churn created
significant processing load on routing engines, sometimes
sufficiently high load to cause router crashes.
To overcome this situation RFD was developed in 1993 and has since been
integrated into most router BGP software implementations. RFD is
described in detail in RFC 2439. RFD is now used in many service provider
networks in the Internet.
1.2 Coordination of flap damping parameters
When RFD was first implemented in commercial routers, vendor
implementations had different default values and different
characteristics. As inconsistency would result in different rates
of flap damping, and therefor introduce inconsistent path selection
and thus behavior that was very hard to diagnose, the ISP community
introduced a consistent set of recommendations for flap damping
parameters, so that ISPs deploying RFD would treat flapping
prefixes in the same way.
This call for consistency resulted in the RIPE Routing Working Group
producing first ripe-178, then ripe-210, and finally the ripe-229
documents [2], following consensus of the Routing Working Group.
The parameters documented in ripe-229 were considered, at time of
publication in 2001, the best current practice.
2. Current Status of Route Flap Damping
Research in the years following the introduction of RFD into BGP
implementations, and the publication of the RIPE Routing Working Group
recommendations, has demonstrated that there are real and signficant
problems with RFD as deployed on the Internet today.
2.1 Impeded Convergence
Perhaps the best known work highlighting major problems with RFD is that
by Zhuoquing Mao and colleagues, presented at Sigcomm in 2002. Following
presentations by Randy Bush and colleagues explain the research work more
accessibly.
The major issue is that if one path is withdrawn, all BGP speakers will
use best path selection to pick the next best path, and advertise this
best path to all their neighbours. These neighbours will see a change in
path; a change in path is a change in attribute, so the prefix as seen
on a neighbouring router will attract a flap penalty - even though
that path is perfectly valid and there has been no disappearance of
the prefix from the routing table [5].
And this path "hunting" goes on throughout the Internet - a simple
prefix withdrawal can result in the appearance of a major flap event a
few AS hops away in the Internet, with the result that vendor default
and even the RIPE-229 recommended flap damping parameters will mark the
prefix to be suppressed. While the operator can see this is an error,
the routers are simply reacting to the circumstances presented to
them.
2.2 Updates transiting the network
Problems are not just caused by path "hunting". Each implementation
of BGP either has differing values of the Minimum Route Advertisement
Interval (MRAI) Timer (the amount of time a router waits before passing
on a route update) or does not implement MRAI at all in favour of
the vendor's own throttling algorithm.
Some implementations pass on the update without waiting at all, others
wait for 30 seconds, etc. These differences mean that update messages
transiting different ASNs using different vendor equipment will arrive
at the target router at different times. This router will see these
different messages, and will consider each one for best path options.
This will more than likely result in a different best path offered to
its neighbours for each message update arriving.
The result of this is that a simple update message from one ASN would
be seen as a multiple route flap event a few ASN hops away - when in
fact there was no instability whatsoever. There have been actual
measurements where this resulted in a single prefix withdrawal
producing 41 BGP events a few hops away!
Not only is the MRAI timer a potential source of problems, but also
differences in CPU loadings and CPU speed will result in different
update times for prefixes announcements passing from router to router.
These differences will also contribute to the effects described above.
3. Solutions
Possible solutions to the problems summarised above have been proposed and
analysed in the work by Zhouqing Mao and colleagues.
However, despite publication in 2002, there has since then been no
desire expressed from the ISP industry for these modifications to be made
to the BGP implementations. Nor has there been any activity by the BGP
implementors to enhance their flap damping implementations to follow
those recommendations.
As the power of routers has increased, the original needs for BGP Flap
Damping is no longer a major concern for operators or router equipment
vendors as it was in the mid-1990s when route flapping consumed a
signficant percentage of the CPU of early routers. In fact, the
negative effects of RFD, as described above, have become the major
concern, the cure has become worse than the disease!
4. Recommendation
This Routing Working Group document proposes that with the current
implementations of BGP flap damping, the application of flap damping
in ISP networks is NOT recommended. The recommendations given in ripe-229
and previous documents [2] are considered obsolete henceforth.
If flap damping is implemented, the ISP operating that network will
cause side-effects to their customers and the Internet users of their
customers' content and services as described in the previous sections.
These side-effects would quite likely be worse than the impact caused
by simply not running flap damping at all.
5. Conclusion
With current vendor implementations, BGP flap damping is harmful to
the reachability of prefixes across the Internet. We would like to
encourage more work to correct some of the issues highlighted by the
work of Mao et al [3], to allow the viewing of prefix flap statistics
without applying flap damping, and permit more flexible per eBGP
neighbour damping configuration features for network operators.
6. Acknowledgements
We would like to acknowledge valuable contributions and feedback from
Randy Bush.
7. References
[1] Curtis Villamizar, Ravi Chandra, Ramesh Govindan
RFC2439: BGP Route Flap Damping (Proposed Standard)
ftp://ftp.ietf.org/rfc/rfc2439.txt
[2] RIPE Documents
ftp://ftp.ripe.net/ripe/docs/ripe-178.txt
ftp://ftp.ripe.net/ripe/docs/ripe-210.txt
ftp://ftp.ripe.net/ripe/docs/ripe-229.txt
[3] Zhouqing Mao, Ramesh Govindan, George Varghese, Randy Katz
Route Flap Damping Exacerbates Internet Routing Congerence
Sigcomm 2002
http://www.eecs.umich.edu/~zmao/Papers/sig02.pdf
[4] Randy Bush, Tim Griffin, Zhouqing Mao
Route Flap Damping: Harmful?
NANOG 26
http://www.nanog.org/mtg-0210/ppt/flap.pdf
[5] Craig Labovitz, Abha Ahuja, Abhijit Bose, Farnam Jihanian
Delayed Internet Routing Convergence
Sigcomm 2000
http://www.acm.org/sigs/sigcomm/sigcomm2000/conf/paper/sigcomm2000-5-2.pdf
7. Authors
The authors can be contacted as follows:
Philip Smith <pfs(a)cisco.com>
Christian Panigl <panigl(a)cc.univie.ac.at>
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