1,626 blocks registered in United Kingdom.

🇬🇧 Blake UK B0:B3:53:00:00:00 /28 MA-M 🇬🇧 Blake UK 70:B3:D5:9D:A0:00 /36 MA-S 🇬🇧 BLIGHTER SURVEILLANCE SYSTEMS LTD 8C:1F:64:B2:20:00 /36 MA-S 🇬🇧 BlinkPipe Ltd 40:D8:55:15:30:00 /36 IAB 🇬🇧 Blu Wireless Technology Ltd 68:1F:40:00:00:00 /24 MA-L 🇬🇧 Blu Wireless Technology Ltd 70:B3:D5:6E:80:00 /36 MA-S 🇬🇧 Blue Chip Technology Ltd 00:C0:46:00:00:00 /24 MA-L 🇬🇧 BlueArc UK Ltd 00:30:17:00:00:00 /24 MA-L 🇬🇧 Bluebell Opticom Limited 00:50:C2:7C:90:00 /36 IAB 🇬🇧 BlueBox Video Limited 70:B3:D5:4C:60:00 /36 MA-S 🇬🇧 Board Level Limited 00:50:C2:90:A0:00 /36 IAB 🇬🇧 Boosty 30:33:35:00:00:00 /24 MA-L 🇬🇧 Boundary Technologies Ltd 70:B3:D5:BB:C0:00 /36 MA-S 🇬🇧 Boxx TV Ltd F4:58:42:00:00:00 /24 MA-L 🇬🇧 BPC circuits Ltd 00:50:C2:A8:10:00 /36 IAB 🇬🇧 Brain Boxes Limited 00:0A:4F:00:00:00 /24 MA-L 🇬🇧 BrainBoxes Ltd 00:50:C2:03:C0:00 /36 IAB 🇬🇧 BRAND COMMUNICATIONS, LTD. 00:A0:2E:00:00:00 /24 MA-L 🇬🇧 Brandywine Communications UK Ltd. 00:E0:AD:00:00:00 /24 MA-L 🇬🇧 Bridgeworks Ltd. 00:04:1B:00:00:00 /24 MA-L 🇬🇧 Brightlights Intellectual Property Ltd 00:50:C2:75:00:00 /36 IAB 🇬🇧 Brightwell Dispensers 40:D8:55:00:E0:00 /36 IAB 🇬🇧 Brightwell Dosing ltd 8C:1F:64:C7:F0:00 /36 MA-S 🇬🇧 British Federal Ltd. 00:B0:E7:00:00:00 /24 MA-L 🇬🇧 British Telecommunications plc 00:00:DB:00:00:00 /24 MA-L 🇬🇧 Broadcast Wireless Systems Ltd 74:1A:E0:80:00:00 /28 MA-M 🇬🇧 BROWN'S OPERATING SYSTEM SERVICES, LTD. 00:20:9E:00:00:00 /24 MA-L 🇬🇧 Broyce Control Ltd 8C:1F:64:70:C0:00 /36 MA-S 🇬🇧 Brunel University 80:16:B7:00:00:00 /24 MA-L 🇬🇧 BRUSH ELECTRICAL MACHINES LTD 20:2B:DA:80:00:00 /28 MA-M 🇬🇧 Building Block Video C8:F7:04:00:00:00 /24 MA-L 🇬🇧 BVM LIMITED 00:80:FB:00:00:00 /24 MA-L 🇬🇧 BW Broadcast 58:D0:71:00:00:00 /24 MA-L 🇬🇧 Bytemark Computer Consulting Ltd AC:E8:7E:00:00:00 /24 MA-L 🇬🇧 C-Matic Systems Ltd 00:23:3B:00:00:00 /24 MA-L 🇬🇧 C21 Systems Limited 00:50:C2:56:20:00 /36 IAB 🇬🇧 C21 Systems Ltd 70:B3:D5:14:B0:00 /36 MA-S 🇬🇧 C21 Systems Ltd 70:B3:D5:7E:40:00 /36 MA-S 🇬🇧 C4I Systems Ltd 70:B3:D5:5C:60:00 /36 MA-S 🇬🇧 CA Traffic Ltd 00:50:C2:A8:90:00 /36 IAB 🇬🇧 CableFree Networks Limited 10:B7:A8:00:00:00 /24 MA-L 🇬🇧 Cabletime Limited 00:07:CE:00:00:00 /24 MA-L 🇬🇧 Cadac Holdings Ltd C4:55:A6:00:00:00 /24 MA-L 🇬🇧 Caldero Limited B4:D6:4E:00:00:00 /24 MA-L 🇬🇧 Calibre UK LTD 9C:5E:73:00:00:00 /24 MA-L 🇬🇧 Calibre UK LTD 00:50:C2:7A:40:00 /36 IAB 🇬🇧 CALISTA 00:10:D8:00:00:00 /24 MA-L 🇬🇧 CallTech International Limited 00:50:C2:01:E0:00 /36 IAB 🇬🇧 Calnex Solutions plc 00:50:C2:8B:70:00 /36 IAB 🇬🇧 Calnex Solutions plc 8C:1F:64:70:30:00 /36 MA-S 🇬🇧 Calon Associates Limited 40:D8:55:13:80:00 /36 IAB 🇬🇧 Calrec Audio Ltd 00:0D:07:00:00:00 /24 MA-L 🇬🇧 Cambium Networks Limited 00:04:56:00:00:00 /24 MA-L 🇬🇧 Cambium Networks Limited 30:CB:C7:00:00:00 /24 MA-L 🇬🇧 Cambium Networks Limited 58:C1:7A:00:00:00 /24 MA-L 🇬🇧 Cambium Networks Limited 90:14:AF:00:00:00 /24 MA-L 🇬🇧 Cambium Networks Limited 90:6D:62:00:00:00 /24 MA-L 🇬🇧 Cambium Networks Limited B4:A2:5C:00:00:00 /24 MA-L 🇬🇧 Cambium Networks Limited BC:A9:93:00:00:00 /24 MA-L 🇬🇧 Cambium Networks Limited BC:E6:7C:00:00:00 /24 MA-L 🇬🇧 Cambium Networks Limited FC:11:65:00:00:00 /24 MA-L 🇬🇧 Cambridge Broadband Networks Group 00:CB:BD:00:00:00 /24 MA-L 🇬🇧 Cambridge Consultants Ltd 00:19:02:00:00:00 /24 MA-L 🇬🇧 CAMBRIDGE CONSULTANTS LTD 00:50:C2:5F:60:00 /36 IAB 🇬🇧 Cambridge Executive Limited 20:FA:BB:00:00:00 /24 MA-L 🇬🇧 Cambridge Medical Robotics Ltd 60:3E:CA:00:00:00 /24 MA-L 🇬🇧 Cambridge Pixel 70:B3:D5:02:30:00 /36 MA-S 🇬🇧 Cambridge Research Systems Ltd 8C:1F:64:2D:00:00 /36 MA-S 🇬🇧 Cambridge Silicon Radio 00:02:5B:00:00:00 /24 MA-L 🇬🇧 Cambridge Visual Networks Ltd 00:21:9A:00:00:00 /24 MA-L 🇬🇧 Cambrionix Ltd A4:24:DD:00:00:00 /24 MA-L 🇬🇧 Cambustion Ltd 00:50:C2:99:90:00 /36 IAB 🇬🇧 CAME UK D8:25:DF:00:00:00 /24 MA-L 🇬🇧 Cammegh Limited 00:50:C2:C4:30:00 /36 IAB 🇬🇧 Camrivox Ltd. 00:17:A2:00:00:00 /24 MA-L 🇬🇧 CAMTEC ELECTRONICS LTD. 00:00:FF:00:00:00 /24 MA-L 🇬🇧 Cannon Technologies 00:50:C2:5D:50:00 /36 IAB 🇬🇧 CAPITOL BUSINESS SYSTEMS, LTD. 00:50:A5:00:00:00 /24 MA-L 🇬🇧 Captec Ltd 34:D0:B8:00:00:00 /28 MA-M 🇬🇧 CARADON TREND LTD. 00:10:70:00:00:00 /24 MA-L 🇬🇧 Carallon Limited 00:13:B2:00:00:00 /24 MA-L 🇬🇧 CARDIAC RECORDERS, INC. 00:9D:8E:00:00:00 /24 MA-L 🇬🇧 CARDIAC RECORDERS, INC. 02:9D:8E:00:00:00 /24 MA-L 🇬🇧 Cascade Technologies Ltd 00:50:C2:7D:E0:00 /36 IAB 🇬🇧 Cashmaster International Limited A0:73:32:00:00:00 /24 MA-L 🇬🇧 Castle Technology Ltd 00:09:95:00:00:00 /24 MA-L 🇬🇧 CaTs3 Limited 00:50:C2:99:C0:00 /36 IAB 🇬🇧 CCC Network Systems Group Ltd. 00:02:EF:00:00:00 /24 MA-L 🇬🇧 CDS Rail 00:50:C2:24:A0:00 /36 IAB 🇬🇧 CEDAR Audio Ltd 00:50:C2:7C:A0:00 /36 IAB 🇬🇧 CEDAR Audio Ltd 8C:1F:64:83:90:00 /36 MA-S 🇬🇧 Cello Electronics (UK) Ltd 48:CB:6E:00:00:00 /24 MA-L 🇬🇧 Cello Electronics (UK) Ltd 70:B3:D5:29:50:00 /36 MA-S 🇬🇧 cellXica ltd 94:AB:18:00:00:00 /24 MA-L 🇬🇧 CELOXICA Ltd DC:AE:04:00:00:00 /24 MA-L 🇬🇧 CENSIS, Uiversity of Glasgow 70:B3:D5:1C:20:00 /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 🇬🇧 Chameleon Technology (UK) Limited 0C:A2:F4:00:00:00 /24 MA-L 🇬🇧 ChamSys 8C:1F:64:14:30:00 /36 MA-S