17,370 blocks registered in United States.

🇺🇸 Critical Link LLC 70:B3:D5:F1:D0:00 /36 MA-S 🇺🇸 Critical Loop 60:15:9F:70:00:00 /28 MA-M 🇺🇸 Criticare Systems, Inc 44:59:9F:00:00:00 /24 MA-L 🇺🇸 Criticare Systems, Inc 00:50:C2:C9:80:00 /36 IAB 🇺🇸 CROMEMCO INCORPORATED 08:00:04:00:00:00 /24 MA-L 🇺🇸 CrossBar, Inc. 8C:1F:64:31:00:00 /36 MA-S 🇺🇸 Crossbeam Systems, Inc. 00:03:D2:00:00:00 /24 MA-L 🇺🇸 Crossbow Technology, Inc 00:1A:4C:00:00:00 /24 MA-L 🇺🇸 Crossbow Technology, Inc. 00:50:C2:2F:30:00 /36 IAB 🇺🇸 CROSSCOMM CORPORATION 00:00:98:00:00:00 /24 MA-L 🇺🇸 Crossmatch Technologies/HID Global 00:30:8E:00:00:00 /24 MA-L 🇺🇸 Crossport Systems 00:06:09:00:00:00 /24 MA-L 🇺🇸 Crossport Systems 00:50:C2:08:50:00 /36 IAB 🇺🇸 CROSSROADS SYSTEMS, INC. 00:E0:02:00:00:00 /24 MA-L 🇺🇸 Crown Audio -- Harmanm International 00:0A:40:00:00:00 /24 MA-L 🇺🇸 Crtiical Link 00:50:C2:BF:80:00 /36 IAB 🇺🇸 CRU-Dataport 60:F5:9C:00:00:00 /24 MA-L 🇺🇸 Cryogenic Control Systems, Inc. 00:50:C2:6F:40:00 /36 IAB 🇺🇸 Cryptek Inc. 00:00:8D:00:00:00 /24 MA-L 🇺🇸 Cryptotronix LLC 70:B3:D5:0D:B0:00 /36 MA-S 🇺🇸 Crystal Group, Inc. 00:90:D6:00:00:00 /24 MA-L 🇺🇸 Crystal Group, Inc. 00:91:D6:00:00:00 /24 MA-L 🇺🇸 CRYSTAL SEMICONDUCTOR CORP. 00:60:11:00:00:00 /24 MA-L 🇺🇸 Crystalfontz America, Inc. 58:B9:E1:00:00:00 /24 MA-L 🇺🇸 CSI-CONTROL SYSTEMS 00:10:C3:00:00:00 /24 MA-L 🇺🇸 CSPI 00:E0:41:00:00:00 /24 MA-L 🇺🇸 CSS LABS 00:00:38:00:00:00 /24 MA-L 🇺🇸 CST Group 40:D8:55:0F:50:00 /36 IAB 🇺🇸 Ctek, Inc. 24:86:F4:00:00:00 /24 MA-L 🇺🇸 CTI PRODUCTS, INC. 00:10:EE:00:00:00 /24 MA-L 🇺🇸 CTROGERS LLC 70:B3:D5:47:40:00 /36 MA-S 🇺🇸 CU Velocity 70:9F:EC:00:00:00 /24 MA-L 🇺🇸 CubeWorks, Inc. 8C:1F:64:88:E0:00 /36 MA-S 🇺🇸 Cubic Defense Applications, Inc. 00:0E:96:00:00:00 /24 MA-L 🇺🇸 Cubic Defense Simulation Systems 00:14:8D:00:00:00 /24 MA-L 🇺🇸 Cubic ITS, Inc. dba GRIDSMART Technologies 70:B3:D5:7E:C0:00 /36 MA-S 🇺🇸 Cubic ITS, Inc. dba GRIDSMART Technologies 70:B3:D5:CB:F0:00 /36 MA-S 🇺🇸 Cubic ITS, Inc. dba GRIDSMART Technologies 70:B3:D5:D5:00:00 /36 MA-S 🇺🇸 Cubic ITS, Inc. dba GRIDSMART Technologies 8C:1F:64:52:D0:00 /36 MA-S 🇺🇸 Cubic Systems, Inc. 00:1B:C5:09:80:00 /36 MA-S 🇺🇸 Cubic Transportation Systems Inc 00:0C:AA:00:00:00 /24 MA-L 🇺🇸 CUBIX CORPORATION 00:20:94:00:00:00 /24 MA-L 🇺🇸 Cubix Corporation 9A:56:4B:00:00:00 /24 CID 🇺🇸 Cuff C0:2D:EE:00:00:00 /24 MA-L 🇺🇸 CUJO LLC CC:D3:1E:D0:00:00 /28 MA-M 🇺🇸 Cummings Engineering B0:79:08:00:00:00 /24 MA-L 🇺🇸 Cummins Inc 00:1C:E8:00:00:00 /24 MA-L 🇺🇸 Cummins Inc 7C:E4:A1:B0:00:00 /28 MA-M 🇺🇸 CUMMINS-ALLISON CORP. 00:23:CF:00:00:00 /24 MA-L 🇺🇸 CUMULUS CORPORATIION 00:80:E8:00:00:00 /24 MA-L 🇺🇸 Cumulus Networks, inc 44:38:39:00:00:00 /24 MA-L 🇺🇸 Curb, Inc. 30:49:50:60:00:00 /28 MA-M 🇺🇸 Curiouser Products Inc CC:3B:58:00:00:00 /24 MA-L 🇺🇸 Currant, Inc. 0C:C7:31:00:00:00 /24 MA-L 🇺🇸 Current Energy 00:11:DF:00:00:00 /24 MA-L 🇺🇸 CURRENT WAYS, INC. B4:A2:EB:90:00:00 /28 MA-M 🇺🇸 Current, powered by GE 8C:C6:61:00:00:00 /24 MA-L 🇺🇸 Currux Vision LLC 8C:1F:64:66:B0:00 /36 MA-S 🇺🇸 Curtis Door Systems Inc 00:50:C2:8F:30:00 /36 IAB 🇺🇸 Curtis Instruments, Inc. 7C:01:87:00:00:00 /24 MA-L 🇺🇸 Curtis, Inc. 00:1B:3E:00:00:00 /24 MA-L 🇺🇸 Curtis, Inc. 00:50:C2:04:30:00 /36 IAB 🇺🇸 Curtiss Wright Controls Embedded Computing 00:1B:AC:00:00:00 /24 MA-L 🇺🇸 Curves International Inc. 00:16:07:00:00:00 /24 MA-L 🇺🇸 Custom Biogenic Systems 58:FC:DB:30:00:00 /28 MA-M 🇺🇸 Custom Computer Services, Inc. 00:1C:DC:00:00:00 /24 MA-L 🇺🇸 Cutera Inc 00:26:01:00:00:00 /24 MA-L 🇺🇸 CUTLER-HAMMER, INC. 00:D0:AF:00:00:00 /24 MA-L 🇺🇸 CXR Larus Corporation 00:50:C2:68:D0:00 /36 IAB 🇺🇸 Cyan Optic, Inc. 00:1D:99:00:00:00 /24 MA-L 🇺🇸 Cyber Fone, Inc. 00:05:AB:00:00:00 /24 MA-L 🇺🇸 Cyber Switching Inc. 00:09:E6:00:00:00 /24 MA-L 🇺🇸 Cyber-Rain, Inc. BC:A9:D6:00:00:00 /24 MA-L 🇺🇸 Cybera, Inc. BC:B8:52:00:00:00 /24 MA-L 🇺🇸 CYBERDATA CORPORATION 00:20:F7:00:00:00 /24 MA-L 🇺🇸 Cyberex 00:50:C2:0D:B0:00 /36 IAB 🇺🇸 cybernet manufacturing inc. 00:0D:05:00:00:00 /24 MA-L 🇺🇸 Cybernetics 00:0B:56:00:00:00 /24 MA-L 🇺🇸 CyberOptics Corporation 00:01:74:00:00:00 /24 MA-L 🇺🇸 cyberPIXIE, Inc. 00:04:40:00:00:00 /24 MA-L 🇺🇸 Cybertech Inc. 00:1F:B1:00:00:00 /24 MA-L 🇺🇸 CYCLADES CORPORATION 00:60:2E:00:00:00 /24 MA-L 🇺🇸 CYCLE COMPUTER CORPORATION, INC. 00:60:4E:00:00:00 /24 MA-L 🇺🇸 CYCLONE MICROSYSTEMS, INC. 00:80:4D:00:00:00 /24 MA-L 🇺🇸 Cyclops Technology Group 8C:1F:64:FC:30:00 /36 MA-S 🇺🇸 Cyclotronics Power Concepts, Inc 08:A8:A1:00:00:00 /24 MA-L 🇺🇸 Cygnal Integrated Products, Inc. 00:0B:3C:00:00:00 /24 MA-L 🇺🇸 CYGNET SYSTEMS 08:00:4F:00:00:00 /24 MA-L 🇺🇸 Cygnet Technologies, Inc. 00:01:62:00:00:00 /24 MA-L 🇺🇸 Cygnus LLC 70:B3:D5:0F:B0:00 /36 MA-S 🇺🇸 CYLINK CORPORATION 00:A0:35:00:00:00 /24 MA-L 🇺🇸 Cymphonix Corp 00:17:69:00:00:00 /24 MA-L 🇺🇸 Cymtec Systems, Inc. 00:21:0C:00:00:00 /24 MA-L 🇺🇸 Cyon Drones 24:A1:0D:70:00:00 /28 MA-M 🇺🇸 Cypress Computer Systems, Inc. CA:44:6C:00:00:00 /24 CID 🇺🇸 CYPRESS SEMICONDUCTOR 00:A0:50:00:00:00 /24 MA-L 🇺🇸 CYRA TECHNOLOGIES, INC. 00:30:90:00:00:00 /24 MA-L 🇺🇸 Cyras Systems, Inc. 00:03:18:00:00:00 /24 MA-L 🇺🇸 Cytek Media Systems, INC. 00:50:C2:C4:80:00 /36 IAB 🇺🇸 CytoTronics 8C:1F:64:C9:E0:00 /36 MA-S