58,306 registered blocks.

🇺🇸 Centripetal Networks, Inc 2C:5B:E1:00:00:00 /24 MA-L 🇲🇽 Centro de Ingenieria y Desarrollo industrial 70:B3:D5:73:C0:00 /36 MA-S 🇧🇷 Centro de Pesquisas Av Wernher Von Braun 98:6E:E8:70:00:00 /28 MA-M 🇮🇹 Centro Sicurezza Italia SpA B4:FE:8C:00:00:00 /24 MA-L 🇻🇬 CENTROFACTOR INC 00:25:0B:00:00:00 /24 MA-L 🇨🇳 CENTRON COMMUNICATIONS TECHNOLOGIES FUJIAN CO.,LTD 58:E4:76:00:00:00 /24 MA-L 🇺🇸 CENTRUM COMMUNICATIONS, INC. 00:C0:2C:00:00:00 /24 MA-L 🇫🇷 Centum Adetel Group 70:B3:D5:FD:70:00 /36 MA-S 🇺🇸 Century Audio, Inc. DC:44:27:50:00:00 /28 MA-M 🇯🇵 CENTURY CORPORATION 00:E0:37:00:00:00 /24 MA-L 🇺🇸 Century Geophysical Corp. 00:50:C2:0E:70:00 /36 IAB 🇨🇳 CENTURY OPTICOMM CO.,LTD C8:10:73:00:00:00 /24 MA-L 🇯🇵 CENTURY SYSTEMS CORP. 00:80:6D:00:00:00 /24 MA-L 🇯🇵 Centuryarks Ltd., 70:B3:D5:52:C0:00 /36 MA-S 🇺🇸 CenturyLink A0:09:4C:00:00:00 /24 MA-L 🇫🇷 CEOLOGIC 00:10:4E:00:00:00 /24 MA-L 🇦🇺 CEOS Pty Ltd 8C:1C:DA:00:00:00 /28 MA-M 🇩🇪 CeoTronics AG 7C:CB:E2:10:00:00 /28 MA-M 🇺🇸 Cepheid 00:21:38:00:00:00 /24 MA-L 🇺🇸 Cepheid 00:50:C2:15:D0:00 /36 IAB 🇺🇸 Cepton Technologies 18:12:12:00:00:00 /24 MA-L 🇫🇷 CERA ELECTRONIQUE B0:DA:00:00:00:00 /24 MA-L 🇮🇱 CERAGON NETWORKS 00:0A:25:00:00:00 /24 MA-L 🇮🇱 CERAGON NETWORKS 3C:4C:D0:00:00:00 /24 MA-L 🇮🇱 CERAGON NETWORKS F4:B5:BB:00:00:00 /24 MA-L 🇮🇱 Ceragon Networks Ltd. 08:BA:B7:00:00:00 /24 MA-L 🇹🇼 CeraMicro Technology Corporation D0:59:C3:00:00:00 /24 MA-L 🇨🇾 Ceranext Ltd 8C:1F:64:39:40:00 /36 MA-S 🇺🇸 Cercacor Labs D8:09:C3:00:00:00 /24 MA-L 🇺🇸 Cerebras System Inc. 4C:54:8B:00:00:00 /24 MA-L 🇺🇸 Cerebras Systems Inc 70:55:F8:00:00:00 /24 MA-L 🇯🇵 Cerevo Inc. 74:E1:4A:10:00:00 /28 MA-M 🇹🇼 Cerio Corporation 8C:4D:EA:00:00:00 /24 MA-L 🇹🇼 Cermate Technologies Inc. 00:14:84:00:00:00 /24 MA-L 🇹🇼 Cermate Technologies Inc. 78:36:07:00:00:00 /24 MA-L 🇺🇸 Cermetek Microelectronics, Inc. 00:21:3D:00:00:00 /24 MA-L 🇨🇭 CERN 08:00:30:00:00:00 /24 MA-L 🇨🇭 CERN 80:D3:36:00:00:00 /24 MA-L 🇺🇸 Cerner Corporation 00:50:C2:DE:A0:00 /36 IAB 🇺🇸 Cernium Corp 00:21:0F:00:00:00 /24 MA-L 🇰🇷 Ceron Tech Co.,LTD 00:50:C2:A9:10:00 /36 IAB 🇲🇾 Certi Networks Sdn Bhd A4:4F:29:90:00:00 /28 MA-M 🇨🇦 Certicom Corp 00:22:08:00:00:00 /24 MA-L Certis Technology International 58:FC:DB:10:00:00 /28 MA-M 🇸🇬 Certis Technology International Pte Ltd 00:1B:C5:04:A0:00 /36 MA-S 🇲🇹 Certus Operations Ltd 70:B3:D5:4B:20:00 /36 MA-S 🇨🇳 CertusNet Inc. 70:B3:D5:C8:30:00 /36 MA-S 🇨🇳 CertusNet Information Technology Co.,LTD D0:96:86:D0:00:00 /28 MA-M 🇨🇭 CertUsus GmbH 70:B3:D5:66:50:00 /36 MA-S 🇺🇸 Cerus Corp 00:50:C2:60:30:00 /36 IAB 🇹🇼 Cervoz Technology Co; Ltd. 88:C9:B3:10:00:00 /28 MA-M 🇺🇸 CesiumAstro Inc. 70:B3:D5:E5:F0:00 /36 MA-S 🇨🇿 CESNET 00:11:17:00:00:00 /24 MA-L 🇩🇪 CEStronics GmbH 00:25:9A:00:00:00 /24 MA-L 🇮🇹 CET 00:50:C2:80:60:00 /36 IAB 🇸🇬 CET Technologies Pte Ltd 00:11:01:00:00:00 /24 MA-L 🇨🇦 Cetacea Networks Corporation 00:13:82:00:00:00 /24 MA-L 🇺🇸 Cetacean Networks 00:09:8F:00:00:00 /24 MA-L 🇨🇳 CETC Avionics.L td 44:D5:F2:80:00:00 /28 MA-M 🇨🇳 CETC Suntai Information Technology Co., Ltd. F4:3A:FA:B0:00:00 /28 MA-M 🇫🇷 CETIA 00:00:DE:00:00:00 /24 MA-L 🇺🇸 Cetis, Inc 00:19:F3:00:00:00 /24 MA-L 🇩🇪 Cetitec GmbH 70:B3:D5:B3:60:00 /36 MA-S 🇺🇸 Ceton Corp 00:22:2C:00:00:00 /24 MA-L 🇨🇳 CETORY.TV Company Limited 68:72:DC:00:00:00 /24 MA-L 🇸🇮 CETRTA POT, d.o.o., Kranj 00:16:F9:00:00:00 /24 MA-L 🇩🇪 Cetto Industries 70:B3:D5:B7:30:00 /36 MA-S 🇮🇱 CEVA, Ltd. 00:25:3A:00:00:00 /24 MA-L 🇰🇷 CEYON TECHNOLOGY CO.,LTD. 00:16:02:00:00:00 /24 MA-L 🇫🇷 Cezzer Multimedia Technologies 00:23:1E:00:00:00 /24 MA-L 🇨🇳 CG Mobile 8C:D1:7B:00:00:00 /24 MA-L 🇮🇳 CG POWER AND INDUSTRIAL SOLUTIONS LTD FC:D2:B6:00:00:00 /28 MA-M 🇮🇪 CG Power Systems Ireland Limited 00:12:76:00:00:00 /24 MA-L 🇫🇷 CG-WIRELESS 70:B3:D5:BF:30:00 /36 MA-S 🇬🇧 CGI IT UK LIMITED F8:E5:CF:00:00:00 /24 MA-L 🇬🇧 CGI IT UK LIMITED 1C:82:59:60:00:00 /28 MA-M 🇫🇷 Chabrier Services 84:5C:93:00:00:00 /24 MA-L 🇰🇷 CHAHOO Limited 50:8D:6F:00:00:00 /24 MA-L 🇮🇱 Chain Reaction Ltd 34:46:63:10:00:00 /28 MA-M 🇹🇼 Chainleader Communications Corp. 00:19:53:00:00:00 /24 MA-L 🇹🇼 CHAINTECH COMPUTER CO., LTD. 00:50:70:00:00:00 /24 MA-L 🇹🇼 CHAINTECH Technology Corp. C4:CC:37:C0:00:00 /28 MA-M 🇨🇳 Chainzone Technology Co., Ltd 00:1D:6F:00:00:00 /24 MA-L 🇹🇼 Chakra Technology Ltd 8C:1F:64:2B:B0:00 /36 MA-S 🇺🇸 Challenger Supply Holdings, LLC E0:35:60:00:00:00 /24 MA-L 🇺🇸 Chamberlain Access Solutions 00:15:25:00:00:00 /24 MA-L 🇬🇧 Chameleon Technology (UK) Limited 0C:A2:F4:00:00:00 /24 MA-L 🇹🇼 CHAMPIN C8:98:DB:A0:00:00 /28 MA-M 🇺🇸 Champion Optical Network Engineering, LLC E8:07:34:00:00:00 /24 MA-L 🇨🇳 CHAMPIONTECH ENTERPRISE (SHENZHEN) INC E4:4E:76:00:00:00 /24 MA-L 🇬🇧 ChamSys 8C:1F:64:14:30:00 /36 MA-S 🇬🇧 Chamsys Ltd 00:1B:C5:04:20:00 /36 MA-S 🇬🇧 Chamsys Ltd 70:B3:D5:0B:E0:00 /36 MA-S 🇬🇧 Chamsys Ltd 8C:1F:64:FF:80:00 /36 MA-S 🇺🇸 Chaney Instrument Co. 24:C8:6E:00:00:00 /24 MA-L 🇹🇼 CHANG TSENG TECHNOLOGY CO., LTD 00:1D:AE:00:00:00 /24 MA-L 🇹🇼 CHANG YOW TECHNOLOGIES INTERNATIONAL CO.,LTD. E8:5D:86:00:00:00 /24 MA-L 🇨🇳 Changchun FAW Yanfeng Visteon Automotive Electronics.,Ltd. 70:B3:D5:93:B0:00 /36 MA-S 🇨🇳 Changchun Huayu WEBPAD Co.,LTD 00:0E:4A:00:00:00 /24 MA-L 🇨🇳 Changchun Jetty Automotive Technology Co., LTD 78:6B:A5:00:00:00 /24 MA-L