BGP Update Report Interval: 06-Aug-07 -to- 06-Sep-07 (32 days) Observation Point: BGP Peering with AS2.0 TOP 20 Unstable Origin AS Rank ASN Upds % Upds/Pfx AS-Name 1 - AS4538 1072453 2.4% 437.7 -- ERX-CERNET-BKB China Education and Research Network Center 2 - AS18566 622178 1.4% 608.2 -- COVAD - Covad Communications Co. 3 - AS7011 467551 1.0% 498.5 -- FRONTIER-AND-CITIZENS - Frontier Communications of America, Inc. 4 - AS4766 445273 1.0% 533.3 -- KIXS-AS-KR Korea Telecom 5 - AS852 349437 0.8% 587.3 -- ASN852 - Telus Advanced Communications 6 - AS22773 344450 0.8% 449.7 -- CCINET-2 - Cox Communications Inc. 7 - AS4134 341979 0.8% 243.7 -- CHINANET-BACKBONE No.31,Jin-rong Street 8 - AS4812 321444 0.7% 563.9 -- CHINANET-SH-AP China Telecom (Group) 9 - AS9583 313068 0.7% 263.5 -- SIFY-AS-IN Sify Limited 10 - AS6198 307782 0.7% 491.7 -- BATI-MIA - BellSouth Network Solutions, Inc 11 - AS4323 287824 0.6% 212.1 -- TWTC - Time Warner Telecom, Inc. 12 - AS7132 263308 0.6% 563.8 -- SBIS-AS - AT&T Internet Services 13 - AS721 225880 0.5% 438.6 -- DISA-ASNBLK - DoD Network Information Center 14 - AS16852 220065 0.5% 540.7 -- BROADWING-FOCAL - Broadwing Communications Services, Inc. 15 - AS19916 211304 0.5% 372.0 -- ASTRUM-0001 - OLM LLC 16 - AS174 191096 0.4% 192.2 -- COGENT Cogent/PSI 17 - AS9929 190525 0.4% 516.3 -- CNCNET-CN China Netcom Corp. 18 - AS2907 182599 0.4% 556.7 -- ERX-SINET-AS National Center for Science Information Systems 19 - AS4755 181603 0.4% 134.1 -- VSNL-AS Videsh Sanchar Nigam Ltd. Autonomous System 20 - AS5668 170976 0.4% 255.6 -- AS-5668 - CenturyTel Internet Holdings, Inc. TOP 20 Unstable Origin AS (Updates per announced prefix) Rank ASN Upds % Upds/Pfx AS-Name 1 - AS27289 29924 0.1% 29924.0 -- CLEOCOMMUNICATIONS - CLEO COMMUNICATIONS INC 2 - AS26829 25988 0.1% 25988.0 -- YKK-USA - YKK USA,INC 3 - AS22072 25968 0.1% 25968.0 -- 4 - AS30850 27505 0.1% 13752.5 -- DESMIE-AS Hellenic Trasmission System Operator S.A. 5 - AS15126 9119 0.0% 9119.0 -- ASMC - American Suzuki Motor Corporation 6 - AS14906 40287 0.1% 8057.4 -- 7 - AS10275 13512 0.0% 6756.0 -- AS-UNITEDNETWORK - ABS-CBN International 8 - AS13285 43510 0.1% 6215.7 -- OPALTELECOM-AS Opal Telecom 9 - AS43403 6136 0.0% 6136.0 -- SVIAZ-PLUS-AS LLC "Sviaz Plus" 10 - AS43043 5101 0.0% 5101.0 -- INTERKOM-AS Interkom Sp. z o.o. 11 - AS30707 12545 0.0% 4181.7 -- 12 - AS30375 4106 0.0% 4106.0 -- TEVA-NA - Teva Pharmaceuticals USA, INC 13 - AS20816 3161 0.0% 3161.0 -- IIP-NET-AS20816 Science and Society Telecomm Center 14 - AS39408 3126 0.0% 3126.0 -- CZ-ETHERNET AVI ethernet.cz 15 - AS21348 5452 0.0% 2726.0 -- KOPTERIFI KOPTERIFI is autonomous system. Located in Vammala Finland 16 - AS43046 2657 0.0% 2657.0 -- MSOLS-AS MSOLS LTD 17 - AS9660 7405 0.0% 2468.3 -- KANNET-AS-AP Telecommunication and ISP company 18 - AS13620 26795 0.1% 2435.9 -- ASN-ELAN - Elan Communications, Inc. 19 - AS36011 4692 0.0% 2346.0 -- AHSYS-ASN - Atlantic Health System 20 - AS40359 2251 0.0% 2251.0 -- SOUTHEASTERNMILLS-ROME - Southeastern Mills, Inc. TOP 20 Unstable Prefixes Rank Prefix Upds % Origin AS -- AS Name 1 - 221.135.22.0/24 47845 0.1% AS9583 -- SIFY-AS-IN Sify Limited 2 - 62.24.238.0/24 42200 0.1% AS13285 -- OPALTELECOM-AS Opal Telecom 3 - 117.58.192.0/19 38318 0.1% AS7491 -- PI-PH-AS-AP PI-PHILIPINES 4 - 80.243.64.0/20 30591 0.1% AS21332 -- NTC-AS New Telephone Company 5 - 208.46.32.0/24 29924 0.1% AS27289 -- CLEOCOMMUNICATIONS - CLEO COMMUNICATIONS INC 6 - 221.135.253.0/24 29033 0.1% AS9583 -- SIFY-AS-IN Sify Limited 7 - 194.110.73.0/24 27469 0.1% AS30850 -- DESMIE-AS Hellenic Trasmission System Operator S.A. 8 - 12.108.254.0/24 25988 0.1% AS26829 -- YKK-USA - YKK USA,INC 9 - 12.106.30.0/24 25968 0.1% AS22072 -- 10 - 209.163.125.0/24 18118 0.0% AS14390 -- CORENET - Coretel America, Inc. 11 - 221.135.113.0/24 14332 0.0% AS9583 -- SIFY-AS-IN Sify Limited 12 - 64.95.193.0/24 12501 0.0% AS30707 -- 13 - 89.4.131.0/24 12432 0.0% AS24731 -- ASN-NESMA National Engineering Services and Marketing Company Ltd. (NESMA) 14 - 89.4.130.0/24 12067 0.0% AS24731 -- ASN-NESMA National Engineering Services and Marketing Company Ltd. (NESMA) 15 - 203.63.26.0/24 11765 0.0% AS9747 -- EZINTERNET-AS-AP EZInternet Pty Ltd 16 - 89.4.129.0/24 11652 0.0% AS24731 -- ASN-NESMA National Engineering Services and Marketing Company Ltd. (NESMA) 17 - 89.4.158.0/24 11251 0.0% AS24731 -- ASN-NESMA National Engineering Services and Marketing Company Ltd. (NESMA) 18 - 89.4.128.0/24 10945 0.0% AS24731 -- ASN-NESMA National Engineering Services and Marketing Company Ltd. (NESMA) 19 - 77.247.128.0/20 10232 0.0% AS34034 -- ARCTEL-AS Arctel Company Main AS AS43043 -- INTERKOM-AS Interkom Sp. z o.o. 20 - 124.7.157.0/24 9258 0.0% AS9583 -- SIFY-AS-IN Sify Limited Details at http://bgpupdates.potaroo.net ------------------------------------ Copies of this report are mailed to: nanog@merit.edu eof-list@ripe.net apops@apops.net routing-wg@ripe.net afnog@afnog.org