17,320 blocks registered in United States.

🇺🇸 CellPlus technologies, Inc. 00:50:C2:C5:E0:00 /36 IAB 🇺🇸 CELLPORT LABS, INC. 00:E0:53:00:00:00 /24 MA-L 🇺🇸 Cellular Specialties, Inc. 70:B3:D5:3C:20:00 /36 MA-S 🇺🇸 Celona Inc. B4:15:7E:00:00:00 /24 MA-L 🇺🇸 Celotek Corp 00:50:C2:03:F0:00 /36 IAB 🇺🇸 CELOX Networks 00:05:A2:00:00:00 /24 MA-L 🇺🇸 CelPlan International, Inc. 00:14:68:00:00:00 /24 MA-L 🇺🇸 Celsian Technologies, Inc. 00:06:A1:00:00:00 /24 MA-L 🇺🇸 CEM Corporation 00:08:79:00:00:00 /24 MA-L 🇺🇸 CEM Ltd 70:B3:D5:40:10:00 /36 MA-S 🇺🇸 CEM Ltd 8C:1F:64:EE:00:00 /36 MA-S 🇺🇸 CEMSI 00:50:C2:B8:D0:00 /36 IAB 🇺🇸 CEMSI, Inc. 40:D8:55:11:E0:00 /36 IAB 🇺🇸 CENiX Inc. 00:07:49:00:00:00 /24 MA-L 🇺🇸 CENTER FOR HIGH PERFORMANCE 00:20:BA:00:00:00 /24 MA-L 🇺🇸 CenterClick LLC 8C:1F:64:F4:90:00 /36 MA-S 🇺🇸 Centero 70:B3:D5:CE:20:00 /36 MA-S 🇺🇸 Centerpoint Broadband Technologies, Inc. 00:03:BF:00:00:00 /24 MA-L 🇺🇸 CENTIGRAM COMMUNICATIONS CORP. 00:90:15:00:00:00 /24 MA-L 🇺🇸 CENTILLION NETWORKS, INC. 00:A0:00:00:00:00 /24 MA-L 🇺🇸 Centillium Communications 00:01:1D:00:00:00 /24 MA-L 🇺🇸 Centrak, Inc. 00:24:DD:00:00:00 /24 MA-L 🇺🇸 CENTRAL DATA CORPORATION 00:A0:E7:00:00:00 /24 MA-L 🇺🇸 Central Railway Manufacturing 68:91:D0:00:00:00 /28 MA-M 🇺🇸 CentrAlert, Inc. D0:76:50:00:00:00 /28 MA-M 🇺🇸 CentraLite Systems, Inc. 00:16:A2:00:00:00 /24 MA-L 🇺🇸 Centripetal Networks, Inc 2C:5B:E1:00:00:00 /24 MA-L 🇺🇸 CENTRUM COMMUNICATIONS, INC. 00:C0:2C:00:00:00 /24 MA-L 🇺🇸 Century Audio, Inc. DC:44:27:50:00:00 /28 MA-M 🇺🇸 Century Geophysical Corp. 00:50:C2:0E:70:00 /36 IAB 🇺🇸 CenturyLink A0:09:4C:00:00:00 /24 MA-L 🇺🇸 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 🇺🇸 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 🇺🇸 Cermetek Microelectronics, Inc. 00:21:3D: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 🇺🇸 Cerus Corp 00:50:C2:60:30:00 /36 IAB 🇺🇸 CesiumAstro Inc. 70:B3:D5:E5:F0:00 /36 MA-S 🇺🇸 Cetacean Networks 00:09:8F:00:00:00 /24 MA-L 🇺🇸 Cetis, Inc 00:19:F3:00:00:00 /24 MA-L 🇺🇸 Ceton Corp 00:22:2C:00:00:00 /24 MA-L 🇺🇸 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 🇺🇸 Champion Optical Network Engineering, LLC E8:07:34:00:00:00 /24 MA-L 🇺🇸 Chaney Instrument Co. 24:C8:6E:00:00:00 /24 MA-L 🇺🇸 Channel Master LLC 8C:1F:64:A0:B0:00 /36 MA-S 🇺🇸 CHANNEL SYSTEMS INTERN'L INC. 00:40:BF:00:00:00 /24 MA-L 🇺🇸 CHANNELMATIC, INC. 00:60:B7:00:00:00 /24 MA-L 🇺🇸 Charles Industries 00:03:02:00:00:00 /24 MA-L 🇺🇸 Charles Industries 00:05:5B:00:00:00 /24 MA-L 🇺🇸 CHARLES RIVER DATA SYSTEMS,INC 00:40:E8:00:00:00 /24 MA-L 🇺🇸 Charles River Laboratories 70:BF:3E:00:00:00 /24 MA-L 🇺🇸 Charter Communications 2A:FD:6A:00:00:00 /24 CID 🇺🇸 Chase Manhattan Bank 00:50:C2:04:50:00 /36 IAB 🇺🇸 Chauvet C0:22:42:00:00:00 /24 MA-L 🇺🇸 Check Point Software Technologies 00:A0:8E:00:00:00 /24 MA-L 🇺🇸 Checkpoint Systems, Inc. 00:17:8D:00:00:00 /24 MA-L 🇺🇸 CHeKT Inc. 80:05:3A:00:00:00 /24 MA-L 🇺🇸 Chelsio Communications 00:07:43:00:00:00 /24 MA-L 🇺🇸 Chemelex LLC 00:12:4F:00:00:00 /24 MA-L 🇺🇸 Cheng Hongjian 00:19:86:00:00:00 /24 MA-L 🇺🇸 Cherry Labs, Inc. 70:B3:D5:1E:C0:00 /36 MA-S 🇺🇸 Chesapeake Sciences Corp 00:50:C2:75:60:00 /36 IAB 🇺🇸 Chiaro Networks, Ltd. 00:03:4D:00:00:00 /24 MA-L 🇺🇸 China Palms Telecom.Ltd 60:FE:1E:00:00:00 /24 MA-L 🇺🇸 Chip2Chip 00:03:F5:00:00:00 /24 MA-L 🇺🇸 CHIPCOM CORPORATION 08:00:8F:00:00:00 /24 MA-L 🇺🇸 ChipER Technology co. ltd 18:F1:8E:00:00:00 /24 MA-L 🇺🇸 CHIPS & Systems, Inc. 00:13:81:00:00:00 /24 MA-L 🇺🇸 ChipWrights, Inc. 00:50:C2:13:30:00 /36 IAB 🇺🇸 Choice IT Global LLC 90:AF:59:00:00:00 /24 MA-L 🇺🇸 Chrisso Technologies LLC 00:50:C2:F6:40:00 /36 IAB 🇺🇸 Chromalox, Inc. 70:B3:D5:84:E0:00 /36 MA-S 🇺🇸 CHROMATICS INC 00:00:2D:00:00:00 /24 MA-L 🇺🇸 CHROMATIS NETWORKS, INC. 00:50:0E:00:00:00 /24 MA-L 🇺🇸 Chromisys, Inc. 00:02:22:00:00:00 /24 MA-L 🇺🇸 Chrontel F0:02:2B:00:00:00 /24 MA-L 🇺🇸 Chrysalis Development 00:09:07:00:00:00 /24 MA-L 🇺🇸 ChuanG International Holding CO.,LTD. 00:15:7F:00:00:00 /24 MA-L 🇺🇸 Church & Dwight Co., Inc. 24:4E:7B:D0:00:00 /28 MA-M 🇺🇸 Church & Dwight Co., Inc. 34:04:9E:90:00:00 /28 MA-M 🇺🇸 Church & Dwight Co., Inc. 70:88:6B:60:00:00 /28 MA-M 🇺🇸 CHYRON CORPORATION 00:00:3A:00:00:00 /24 MA-L 🇺🇸 Cicada Semiconductor, Inc. 00:03:F1:00:00:00 /24 MA-L 🇺🇸 Cidco Incorporated 00:03:15:00:00:00 /24 MA-L 🇺🇸 Cidra Corp. 00:0D:CF:00:00:00 /24 MA-L 🇺🇸 Ciena Corporation 00:23:8A:00:00:00 /24 MA-L 🇺🇸 Ciena Corporation 04:79:FD:00:00:00 /24 MA-L 🇺🇸 Ciena Corporation 14:4E:2A:00:00:00 /24 MA-L 🇺🇸 Ciena Corporation 18:92:A4:00:00:00 /24 MA-L 🇺🇸 Ciena Corporation 1C:11:61:00:00:00 /24 MA-L 🇺🇸 Ciena Corporation 20:80:58:00:00:00 /24 MA-L 🇺🇸 Ciena Corporation 24:65:E1:00:00:00 /24 MA-L 🇺🇸 Ciena Corporation 2C:39:C1:00:00:00 /24 MA-L 🇺🇸 Ciena Corporation 2C:4A:11:00:00:00 /24 MA-L 🇺🇸 Ciena Corporation 54:C3:3E:00:00:00 /24 MA-L