BGP Update Report Interval: 27-Apr-07 -to- 10-May-07 (14 days) Observation Point: BGP Peering with AS4637 TOP 20 Unstable Origin AS Rank ASN Upds % Upds/Pfx AS-Name 1 - AS4775 35803 2.7% 288.7 -- GLOBE-TELECOM-AS Telecom Carrier / ISP Plus + 2 - AS1239 23919 1.8% 29.9 -- SPRINTLINK - Sprint 3 - AS306 20164 1.5% 110.8 -- DNIC - DoD Network Information Center 4 - AS17974 17698 1.3% 66.3 -- TELKOMNET-AS2-AP PT TELEKOMUNIKASI INDONESIA 5 - AS7018 16753 1.3% 11.1 -- ATT-INTERNET4 - AT&T WorldNet Services 6 - AS24731 16522 1.2% 384.2 -- ASN-NESMA National Engineering Services and Marketing Company Ltd. (NESMA) 7 - AS6478 14579 1.1% 13.2 -- ATT-INTERNET3 - AT&T WorldNet Services 8 - AS2386 12859 1.0% 11.2 -- INS-AS - AT&T Data Communications Services 9 - AS11492 12246 0.9% 16.4 -- CABLEONE - CABLE ONE 10 - AS6198 11369 0.9% 18.5 -- BATI-MIA - BellSouth Network Solutions, Inc 11 - AS5803 10710 0.8% 119.0 -- DDN-ASNBLK - DoD Network Information Center 12 - AS8151 9511 0.7% 7.9 -- Uninet S.A. de C.V. 13 - AS9121 8560 0.7% 44.6 -- TTNET TTnet Autonomous System 14 - AS9829 8500 0.6% 32.6 -- BSNL-NIB National Internet Backbone 15 - AS5786 8386 0.6% 79.1 -- UPRENET - University of Puerto Rico 16 - AS34040 8316 0.6% 332.6 -- CZTTNET-AS TTNET Czech Republic 17 - AS702 7926 0.6% 11.5 -- AS702 Verizon Business EMEA - Commercial IP service provider in Europe 18 - AS6197 7781 0.6% 7.5 -- BATI-ATL - BellSouth Network Solutions, Inc 19 - AS2901 7057 0.5% 190.7 -- OGT-AS - Oso Grande Technologies, Inc. 20 - AS11556 6931 0.5% 45.6 -- Cable & Wireless Panama TOP 20 Unstable Origin AS (Updates per announced prefix) Rank ASN Upds % Upds/Pfx AS-Name 1 - AS31594 1682 0.1% 1682.0 -- FORTESS-AS Fortess LLC Network 2 - AS30375 1364 0.1% 1364.0 -- TEVA-NA - Teva Pharmaceuticals USA, INC 3 - AS1708 883 0.1% 883.0 -- FR-CNET-ISSY - Centre National d'Etudes des Telecommunication -- CNET 4 - AS20133 861 0.1% 861.0 -- CASS-COL - CASS INFORMATION SYSTEMS 5 - AS34378 854 0.1% 854.0 -- RUG-AS Razguliay-UKRROS Group 6 - AS29700 2170 0.2% 723.3 -- CYPRESS-SEMICONDUCTOR - Cypress Semiconductor 7 - AS30600 1319 0.1% 659.5 -- CSDI-ASN01 - Corbett Systems Development, Inc. 8 - AS28977 1253 0.1% 626.5 -- UN-UNLB United Nations Logistics Base Brindisi, Italy 9 - AS17645 6108 0.5% 555.3 -- NTT-SG-AP ASN - NTT SINGAPORE PTE LTD 10 - AS41555 550 0.0% 550.0 -- NOVATKL-AS FW Austria, Kundl 11 - AS30707 1610 0.1% 536.7 -- 12 - AS33232 1066 0.1% 533.0 -- ERXNETWORK - eRx Network 13 - AS7234 531 0.0% 531.0 -- RUSSELL - Frank Russell 14 - AS12408 481 0.0% 481.0 -- BIKENT-AS Bikent Ltd. Autonomous system 15 - AS22720 459 0.0% 459.0 -- LEXENT-INC-3NYP-301 - Lexent, Inc. 16 - AS8225 415 0.0% 415.0 -- ASTELIT-MSK-AS Astelit Autonomous System 17 - AS10178 4543 0.3% 413.0 -- KBTUS-AS Korea Baptist Theological University/Seminary 18 - AS41866 398 0.0% 398.0 -- INTERFAXINC-AS Interfax Inc 19 - AS33630 390 0.0% 390.0 -- FIRMLOGICWS - FIRMLOGIC 20 - AS24731 16522 1.2% 384.2 -- ASN-NESMA National Engineering Services and Marketing Company Ltd. (NESMA) TOP 20 Unstable Prefixes Rank Prefix Upds % Origin AS -- AS Name 1 - 203.177.10.0/24 13212 0.8% AS4775 -- GLOBE-TELECOM-AS Telecom Carrier / ISP Plus + 2 - 203.177.132.0/24 12972 0.8% AS4775 -- GLOBE-TELECOM-AS Telecom Carrier / ISP Plus + 3 - 62.204.228.0/23 4032 0.2% AS34040 -- CZTTNET-AS TTNET Czech Republic 4 - 62.204.230.0/23 4007 0.2% AS34040 -- CZTTNET-AS TTNET Czech Republic 5 - 89.4.128.0/24 3419 0.2% AS24731 -- ASN-NESMA National Engineering Services and Marketing Company Ltd. (NESMA) 6 - 89.4.130.0/24 3367 0.2% AS24731 -- ASN-NESMA National Engineering Services and Marketing Company Ltd. (NESMA) 7 - 89.4.131.0/24 3325 0.2% AS24731 -- ASN-NESMA National Engineering Services and Marketing Company Ltd. (NESMA) 8 - 89.4.129.0/24 3264 0.2% AS24731 -- ASN-NESMA National Engineering Services and Marketing Company Ltd. (NESMA) 9 - 89.4.158.0/24 2602 0.2% AS24731 -- ASN-NESMA National Engineering Services and Marketing Company Ltd. (NESMA) 10 - 81.212.197.0/24 2580 0.2% AS9121 -- TTNET TTnet Autonomous System 11 - 81.213.47.0/24 2285 0.1% AS9121 -- TTNET TTnet Autonomous System 12 - 194.42.208.0/20 1975 0.1% AS705 -- UUNET - MCI Communications Services, Inc. d/b/a Verizon Business 13 - 202.136.182.0/24 1929 0.1% AS17645 -- NTT-SG-AP ASN - NTT SINGAPORE PTE LTD 14 - 202.136.176.0/24 1928 0.1% AS17645 -- NTT-SG-AP ASN - NTT SINGAPORE PTE LTD 15 - 58.65.1.0/24 1918 0.1% AS17645 -- NTT-SG-AP ASN - NTT SINGAPORE PTE LTD 16 - 192.160.223.0/24 1870 0.1% AS1239 -- SPRINTLINK - Sprint 17 - 192.160.220.0/24 1870 0.1% AS1239 -- SPRINTLINK - Sprint 18 - 192.160.219.0/24 1870 0.1% AS1239 -- SPRINTLINK - Sprint 19 - 192.160.221.0/24 1870 0.1% AS1239 -- SPRINTLINK - Sprint 20 - 192.160.217.0/24 1870 0.1% AS1239 -- SPRINTLINK - Sprint 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 ausnog@ausnog.net