Hi NANOG, I manually extracted the origins and their org info for the announced block of prefixes. All these prefixes were observed being originated by at most four ASNs simultaneously. I suspect they provide anycast or IXP service, but not positive. Please confirm my conjecture if you know them. Thanks! 27.130.0.0/16 58.147.0.0/20 58.147.0.0/17 58.147.16.0/20 58.147.64.0/20 58.147.80.0/20 58.147.96.0/20 58.147.112.0/20 110.164.0.0/16 110.164.48.0/20 110.164.64.0/20 110.164.80.0/20 110.164.176.0/20 112.143.0.0/16 180.183.0.0/16 202.69.136.0/21 223.204.0.0/16 223.205.0.0/16 AS24326: as-name:TTT-AS-AP|descr:Maxnet, Internet Service Provider, Bangkok|country:TH AS38550: as-name:TTGN-INTER-AS-AP|descr:TTGN , INTERNATIONAL INTERNET GATEWAY, THAILAND|country:TH AS45629: as-name:JASTEL-NETWORK-TH-AP|descr:Jasmine International Tower|country:TH AS45758: as-name:TRIPLETNET-AS-AP|descr:TripleT Internet Internet service provider Bangkok|country:TH 61.237.224.0/20 AS4808:as-name:CHINA169-BJ|descr:CNCGROUP IP network China169 Beijing Province Network|country:CN AS4847:as-name:CNIX-AP|descr:China Networks Inter-Exchange AS9819:as-name:BZNET|descr:Beijing Bozhiruihai Network Technology Co., Ltd.|country:CN AS17772:as-name:CHINACOM|descr:CHINA COMMUNICATIONS SYSTEM Co.,Ltd.|country:CN AS17964: as-name:DXTNET|descr:Beijing Dian-Xin-Tong Network Technologies Co., Ltd.|country:CN AS24138:as-name:CRNET_BJ_IDC-CNNIC-AP|descr:China Tietong Telecommunication Corporation|CN AS38356:as-name:NETEON|descr:Beijing Neteon Tech Co, Ltd.|country:CN AS45114:as-name:CNNIC-SUNINFO-MDC-AP|descr:Beijing Sunrise Technology Co. Ltd.|country:CN 65.61.188.0/24 69.20.95.0/24 AS10532:ASName: RACKSPACE;OrgName:Rackspace Hosting AS15395:as-name:UNSPECIFIED|descr:UK Rackspace|descr:LONDON office AS27357:ASName: RACKSPACE;OrgName:Rackspace Hosting AS33070:ASName: RMH-14;OrgName:Rackspace Hosting 112.142.0.0/16 222.123.0.0/16 AS24326: as-name:TTT-AS-AP|descr:Maxnet, Internet Service Provider, Bangkok|country:TH AS38550: as-name:TTGN-INTER-AS-AP|descr:TTGN , INTERNATIONAL INTERNET GATEWAY, THAILAND|country:TH AS45629: as-name:JASTEL-NETWORK-TH-AP|descr:Jasmine International Tower|country:TH AS45758: as-name:TRIPLETNET-AS-AP|descr:TripleT Internet Internet service provider Bangkok|country:TH AS45626:as-name:TOPL-AU-AS|descr:Travelex Outsourcing Pty Ltd 5/504 Pacific Highway St Leonards NSW AUS 2065|country:AU 198.32.64.0/24 AS4555:ASName: EP0-BLK-ASNBLOCK-5;OrgName:Almond Oil Process, LLC. AS9584:as-name:GENESIS-AP|descr:Diyixian.com Limited|country:HK AS20144:ASName: L-ROOT;Comment:distributed using Anycast. AS42909: as-name: COMMUNITYDNS;descr: Internet Computer Bureau Ltd 198.32.136.0/24 AS195:OrgName:San Diego Supercomputer Center AS293:OrgName:ESnet|OrgId:ENSN-Z AS1239:OrgName:Sprint AS2914:OrgName:NTT America, Inc. AS7018:OrgName:AT&T Services, Inc. 198.32.175.0/24 AS2497:as-name:IIJ|descr:Internet Initiative Japan Inc. AS2914:OrgName:NTT America, Inc.| AS4323:OrgName:tw telecom holdings, inc. AS5650:OrgName:Frontier Communications of America, Inc. AS6461:OrgName:Abovenet Communications, Inc 202.99.58.0/24 AS4808:as-name:CHINA169-BJ|descr:CNCGROUP IP network China169 Beijing Province Network|country:CN AS6619:as-name:SAMSUNGNETWORKS-AS-KR|descr:Samsung Networks Inc. AS17431:as-name:TONET|descr:Beijing TONEK Information Technology Development Company|country:CN AS17964:as-name:DXTNET|descr:Beijing Dian-Xin-Tong Network Technologies Co., Ltd.|country:CN 202.122.116.0/24 AS17775:as-name:STN-CN|descr:SHANGHAI Guangdian Electronics Group Co.,Ltd|country:CN AS18118:as-name:CITICNET-AP|descr:CITIC Networks Management Co.,Ltd. AS24142:as-name:CNNIC-BennalongNet-AP|descr:Shanghai Bennalong Network Technology Co.,LTD AS38356:as-name:NETEON|descr:Beijing Neteon Tech Co, Ltd.|descr:Room203-204, No.1,737,CaoXi Road North,Shanghai,China|country:CN AS38814:as-name:ASIAMAX-HK-EA-AP|descr:Asiamax Technology Limited VPN Service Provider Hong Kong|country:HK 203.119.30.0/24 AS24151:as-name:CNNIC-CRITICAL-AP|descr:China Internet Network Infomation Center AS24406:as-name:CNNIC-CRITICAL-AP|descr:China Internet Network Infomation Center AS24408:as-name:CNNIC-CRITICAL-AP|descr:China Internet Network Infomation Center AS24410:as-name:CNNIC-CRITICAL-AP|descr:China Internet Network Infomation Center 204.79.195.0/24 AS8068:OrgName:Microsoft Corp AS8069:OrgName:GRYPHON NETWORKS AS8071:OrgName:Microsoft Corp AS8075:OrgName:Microsoft Corp 204.79.197.0/24 AS8068:OrgName:Microsoft Corp AS8069:OrgName:GRYPHON NETWORKS AS8071:OrgName:Microsoft Corp AS8075:OrgName:Microsoft Corp AS12076:OrgName:Hotmail Corporation 206.51.38.0/24 AS3549:OrgName:Hotmail Corporation AS6453:OrgName:Tata Communications AS7911:OrgName:Level 3 Communications, Inc. AS25973:OrgName:Mzima Networks, Inc. 206.223.116.0/24 AS293:OrgName:ESnet AS1280:OrgName:Internet Systems Consortium, Inc. AS2914:OrgName:NTT America, Inc. AS6461:OrgName:Abovenet Communications, Inc AS23352:OrgName:Server Central Network 207.231.241.0/24 AS101:OrgName:University of Washington AS226:OrgName:Los Nettos AS293:OrgName:ESnet AS14221:OrgName:University of Washington 208.67.239.0/24 AS11588:OrgName:Highwinds Network Group, Inc. AS23148:OrgName:TERRENAP DATA CENTERS, INC. AS29045:IT ACTION - Managed Hosting AS40009:OrgName:BitGravity, Inc. 222.35.0.0/18 AS4808:as-name:CHINA169-BJ|descr:CNCGROUP IP network China169 Beijing Province Network|country:CN AS4847:as-name:CNIX-AP|descr:China Networks Inter-Exchange|descr:Using International Link at Beijing AS9819:as-name:BZNET|descr:Beijing Bozhiruihai Network Technology Co., Ltd.|country:CN AS17964:as-name:DXTNET|descr:Beijing Dian-Xin-Tong Network Technologies Co., Ltd.|country:CN AS24138:as-name:CRNET_BJ_IDC-CNNIC-AP|descr:China Tietong Telecommunication Corporation|descr:Beijing branch IDC network|country:CN AS38356:as-name:CRNET_BJ_IDC-CNNIC-AP|descr:China Tietong Telecommunication Corporation|descr:Beijing branch IDC network|country:CN AS45114:as-name:CNNIC-SUNINFO-MDC-AP|descr:Beijing Sunrise Technology Co. Ltd. 222.35.248.0/21 AS4847:as-name:CNIX-AP|descr:China Networks Inter-Exchange|descr:Using International Link at Beijing AS9802:as-name:CHINA-ABITCOOL|descr:Abitcool(China) Inc.|country:CN AS9803:as-name:JINGXUN|descr:Beijing Jingxun Public Information Technology Co., Ltd|country:CN AS17964:as-name:DXTNET|descr:Beijing Dian-Xin-Tong Network Technologies Co., Ltd.|country:CN AS18118:as-name:CITICNET-AP|descr:CITIC Networks Management Co.,Ltd. AS24138:as-name:CRNET_BJ_IDC-CNNIC-AP|descr:China Tietong Telecommunication Corporation|descr:Beijing branch IDC network|country:CN AS38356:as-name:CRNET_BJ_IDC-CNNIC-AP|descr:China Tietong Telecommunication Corporation|descr:Beijing branch IDC network|country:CN: Yaoqing On Wed, May 4, 2011 at 3:20 PM, Yaoqing(Joey) Liu <joey.liuyq@gmail.com> wrote:
On Wed, May 4, 2011 at 3:15 PM, Joe Abley <jabley@hopcount.ca> wrote:
On 2011-05-04, at 23:11, Yaoqing(Joey) Liu wrote:
Thanks for clarifying this, actually I have a few more blocks with four origin ASNs that I'm not positive if they are anycast prefixes. Please help distinguish them if the provide anycast service.
You could probably get a good distance towards the answer to this by looking up the prefixes yourself using appropriate whois servers. Enumerating every prefix you see with more than one apparent origin and asking NANOG to type whois for you does not scale very well.
This is definitely a good idea, I'll do it right now. Thanks.
Yaoqing
Joe