BGP Update Report Interval: 30-Mar-09 -to- 30-Apr-09 (32 days) Observation Point: BGP Peering with AS131072 TOP 20 Unstable Origin AS Rank ASN Upds % Upds/Pfx AS-Name 1 - AS6389 371436 4.1% 85.1 -- BELLSOUTH-NET-BLK - BellSouth.net Inc. 2 - AS3130 123394 1.4% 478.3 -- RGNET-3130 RGnet/PSGnet 3 - AS2386 111342 1.2% 85.3 -- INS-AS - AT&T Data Communications Services 4 - AS8452 97850 1.1% 69.2 -- TEDATA TEDATA 5 - AS6478 83258 0.9% 59.5 -- ATT-INTERNET3 - AT&T WorldNet Services 6 - AS17488 77778 0.9% 49.9 -- HATHWAY-NET-AP Hathway IP Over Cable Internet 7 - AS11492 69963 0.8% 56.7 -- CABLEONE - CABLE ONE, INC. 8 - AS29049 67638 0.8% 208.1 -- DELTA-TELECOM-AS Delta Telecom LTD. 9 - AS4323 62131 0.7% 14.4 -- TWTC - tw telecom holdings, inc. 10 - AS7018 60224 0.7% 39.5 -- ATT-INTERNET4 - AT&T WorldNet Services 11 - AS19262 58605 0.7% 59.1 -- VZGNI-TRANSIT - Verizon Internet Services Inc. 12 - AS35805 54928 0.6% 167.5 -- UTG-AS United Telecom AS 13 - AS20115 49616 0.6% 29.5 -- CHARTER-NET-HKY-NC - Charter Communications 14 - AS9829 49466 0.6% 76.6 -- BSNL-NIB National Internet Backbone 15 - AS10796 49370 0.6% 85.0 -- SCRR-10796 - Road Runner HoldCo LLC 16 - AS4755 48369 0.5% 38.6 -- TATACOMM-AS TATA Communications formerly VSNL is Leading ISP 17 - AS8151 44307 0.5% 30.3 -- Uninet S.A. de C.V. 18 - AS21491 42886 0.5% 1383.4 -- UTL-ON-LINE UTL On-line is RF broadband ISP in Uganda - Africa 19 - AS9498 37662 0.4% 50.4 -- BBIL-AP BHARTI Airtel Ltd. 20 - AS12978 37120 0.4% 206.2 -- DOGAN-ONLINE Dogan Iletisim Elektronik Servis Hizmetleri AS TOP 20 Unstable Origin AS (Updates per announced prefix) Rank ASN Upds % Upds/Pfx AS-Name 1 - AS15045 18729 0.2% 6243.0 -- KITTELSON - KITTELSON AND ASSOCIATES, INC. 2 - AS46653 15874 0.2% 5291.3 -- FREDRIKSON---BYRON - Fredrikson & Byron, P.A. 3 - AS40967 4236 0.1% 4236.0 -- CSF-AS CSF Computersoftware fuer Fachanwendungen GmbH 4 - AS32398 19356 0.2% 3226.0 -- REALNET-ASN-1 5 - AS7717 2763 0.0% 2763.0 -- OPENIXP-AS-ID-AP OpenIXP ASN 6 - AS14223 5285 0.1% 2642.5 -- NYSDOH - New York State Department of Health 7 - AS30423 4076 0.1% 2038.0 -- AMEDI-3-ASN1 - Amedisys, Inc. 8 - AS46328 18132 0.2% 2014.7 -- PTCNEBRASKA - PIERCE TELEPHONE COMPANY, INCORPORATED 9 - AS47640 5467 0.1% 1822.3 -- TRICOMPAS Tricomp Sp. z. o. o. 10 - AS5050 24977 0.3% 1665.1 -- PSC-EXT - Pittsburgh Supercomputing Center 11 - AS13325 11776 0.1% 1472.0 -- STOMI - State of Michigan, DMB-CNOC 12 - AS21491 42886 0.5% 1383.4 -- UTL-ON-LINE UTL On-line is RF broadband ISP in Uganda - Africa 13 - AS9796 3831 0.0% 1277.0 -- WIPRO Internet Service Providers 14 - AS34321 2274 0.0% 1137.0 -- LDK-AS Institute of strategic marks, Kiev, Ukraine 15 - AS19398 2003 0.0% 1001.5 -- INDENET - Indenet.net 16 - AS17975 8139 0.1% 904.3 -- APT-AP AS# for peering purpose with IX and ISP. 17 - AS5691 10515 0.1% 808.8 -- MITRE-AS-5 - The MITRE Corporation 18 - AS34996 791 0.0% 791.0 -- ANADOLUSIGORTA-AS Anadolu Sigorta AS 19 - AS41492 787 0.0% 787.0 -- EXIMBANK-AS SC Eximbank SA 20 - AS25412 1520 0.0% 760.0 -- CCRTV-AS CCRTV AS Barcelona Spain TOP 20 Unstable Prefixes Rank Prefix Upds % Origin AS -- AS Name 1 - 72.23.246.0/24 24846 0.3% AS5050 -- PSC-EXT - Pittsburgh Supercomputing Center 2 - 41.204.2.0/24 19003 0.2% AS32398 -- REALNET-ASN-1 3 - 199.45.13.0/24 15854 0.2% AS46653 -- FREDRIKSON---BYRON - Fredrikson & Byron, P.A. 4 - 192.12.120.0/24 10327 0.1% AS5691 -- MITRE-AS-5 - The MITRE Corporation 6 - 192.35.129.0/24 7976 0.1% AS6629 -- NOAA-AS - NOAA 7 - 198.77.177.0/24 7907 0.1% AS6629 -- NOAA-AS - NOAA 8 - 192.102.88.0/24 7894 0.1% AS6629 -- NOAA-AS - NOAA 9 - 63.103.104.0/22 6486 0.1% AS15045 -- KITTELSON - KITTELSON AND ASSOCIATES, INC. 10 - 63.103.108.0/23 6486 0.1% AS15045 -- KITTELSON - KITTELSON AND ASSOCIATES, INC. 11 - 195.96.69.0/24 6143 0.1% AS8225 -- ASTELIT-MSK-AS Astelit Autonomous System 12 - 63.103.110.0/24 5757 0.1% AS15045 -- KITTELSON - KITTELSON AND ASSOCIATES, INC. 13 - 193.201.184.0/21 5649 0.1% AS25546 -- BROOKLANDCOMP-AS Brookland Computer Services 14 - 94.124.16.0/21 5424 0.1% AS47640 -- TRICOMPAS Tricomp Sp. z. o. o. 15 - 123.49.152.0/24 5358 0.1% AS18118 -- CITICNET-AP CITIC Networks Management Co.,Ltd. 16 - 192.135.176.0/24 5268 0.1% AS14223 -- NYSDOH - New York State Department of Health 17 - 202.92.235.0/24 4899 0.1% AS9498 -- BBIL-AP BHARTI Airtel Ltd. 18 - 123.49.144.0/21 4804 0.1% AS18118 -- CITICNET-AP CITIC Networks Management Co.,Ltd. 19 - 205.104.240.0/20 4701 0.1% AS5237 -- DODNIC - DoD Network Information Center AS5839 -- DDN-ASNBLK - DoD Network Information Center 20 - 81.199.18.0/24 4418 0.1% AS21491 -- UTL-ON-LINE UTL On-line is RF broadband ISP in Uganda - Africa 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