Vendor directory

1,633 blocks registered in United Kingdom.

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Every MA-L, MA-M, MA-S, IAB, and CID block IEEE has ever assigned to a named organization, browsable or searchable.

Unique organizations1,364
Total blocks1,633
MA-L count809
MA-M count153
MA-S count370
IAB count293
CID count8
Total address capacity13,870,133,248
Last changed hereOct 7, 2026

Country reflects the address published in the IEEE registration record. It does not indicate where a device was manufactured, sold, located or currently used.

Largest organizations in United Kingdom

Organization Prefix Type
🇬🇧 Dynamode Group 24:3C:20:00:00:00 /24 MA-L 🇬🇧 Dyson Limited 44:6F:F8:00:00:00 /24 MA-L 🇬🇧 Dyson Limited B0:52:1F:00:00:00 /24 MA-L 🇬🇧 Dyson Limited C0:AF:F2:00:00:00 /24 MA-L 🇬🇧 Dyson Limited C8:FF:77:00:00:00 /24 MA-L 🇬🇧 E-Domus International Limited 70:2B:1D:00:00:00 /24 MA-L 🇬🇧 E-T-A Circuit Breakers Ltd 00:C3:43:00:00:00 /24 MA-L 🇬🇧 e2v technologies (UK) ltd. 00:18:28:00:00:00 /24 MA-L 🇬🇧 EA Technology Ltd 9C:69:B4:10:00:00 /28 MA-M 🇬🇧 EarTex 70:B3:D5:46:20:00 /36 MA-S 🇬🇧 EarTex 70:B3:D5:62:70:00 /36 MA-S 🇬🇧 EarTex 70:B3:D5:E0:10:00 /36 MA-S 🇬🇧 EasySYNC Ltd. 78:3F:15:00:00:00 /24 MA-L 🇬🇧 ECM Systems Ltd 00:13:26:00:00:00 /24 MA-L 🇬🇧 ECO MONITORING UTILITY SYSTEMS LTD 00:50:C2:ED:30:00 /36 IAB 🇬🇧 EDMI Europe Ltd 1C:23:4F:00:00:00 /24 MA-L 🇬🇧 EDMI Europe Ltd 44:11:02:00:00:00 /24 MA-L 🇬🇧 EDMI Europe Ltd E4:FE:D9:00:00:00 /24 MA-L 🇬🇧 Edwards Ltd. 00:0C:6D:00:00:00 /24 MA-L 🇬🇧 EGS Technologies Ltd 00:50:C2:DE:40:00 /36 IAB 🇬🇧 EISST International Ltd A0:22:4E:80:00:00 /28 MA-M 🇬🇧 EISST Ltd D4:25:CC:30:00:00 /28 MA-M 🇬🇧 EkkoSense Ltd D0:14:11:00:00:00 /28 MA-M 🇬🇧 Electronic Media Services Ltd 00:50:C2:96:B0:00 /36 IAB 🇬🇧 ELECTROSONIC LTD. 00:E0:AA:00:00:00 /24 MA-L 🇬🇧 Elesar Limited 70:B3:D5:03:F0:00 /36 MA-S 🇬🇧 ELONEX PLC 00:C0:5C:00:00:00 /24 MA-L 🇬🇧 Eloquence Ltd 00:50:C2:03:10:00 /36 IAB 🇬🇧 EM Motorsport Ltd 00:50:C2:59:00:00 /36 IAB 🇬🇧 em-trak B8:4C:87:10:00:00 /28 MA-M 🇬🇧 Embed Limited 40:D8:55:0D:D0:00 /36 IAB 🇬🇧 Embedded Monitoring Systems Ltd. 00:50:C2:D5:A0:00 /36 IAB 🇬🇧 Emergency Lighting Products Limited 70:B3:D5:48:00:00 /36 MA-S 🇬🇧 Emizon Networks Limited 98:7E:46:00:00:00 /24 MA-L 🇬🇧 EMPEG Ltd 00:02:D7:00:00:00 /24 MA-L 🇬🇧 EMS Satcom 00:11:69:00:00:00 /24 MA-L 🇬🇧 Endeleo Limited 00:0F:3C:00:00:00 /24 MA-L 🇬🇧 Endusis Limited 00:50:C2:11:10:00 /36 IAB 🇬🇧 Enecsys Ltd 34:C6:9A:00:00:00 /24 MA-L 🇬🇧 Energy Technology and Control Ltd. 40:D8:55:1D:A0:00 /36 IAB 🇬🇧 Enigma Diagnostics Limited 28:34:10:00:00:00 /24 MA-L 🇬🇧 Enistic Limited 00:50:C2:F4:C0:00 /36 IAB 🇬🇧 enModus 70:B3:D5:77:20:00 /36 MA-S 🇬🇧 Entotem LTD B8:D8:12:90:00:00 /28 MA-M 🇬🇧 ePOINT Embedded Computing Limited 70:B3:D5:01:E0:00 /36 MA-S 🇬🇧 ePOINT Embedded Computing Limited 70:B3:D5:B8:C0:00 /36 MA-S 🇬🇧 Equatel 70:B3:D5:91:10:00 /36 MA-S 🇬🇧 EQUIINET LTD. 00:30:74:00:00:00 /24 MA-L 🇬🇧 Erskine Systems Ltd 00:08:BA:00:00:00 /24 MA-L 🇬🇧 Eseye Design Ltd 00:D0:4C:00:00:00 /24 MA-L 🇬🇧 Esprit Digital Ltd 8C:1F:64:EB:D0:00 /36 MA-S 🇬🇧 essensys plc 6C:A4:01:00:00:00 /24 MA-L 🇬🇧 Ethical Lighting and Sensor Solutions Limited 70:B3:D5:5B:60:00 /36 MA-S 🇬🇧 ETL Systems Ltd 00:1E:EE:00:00:00 /24 MA-L 🇬🇧 Eurotech S.p.A. 00:80:66:00:00:00 /24 MA-L 🇬🇧 EUROTHERM LIMITED 00:0A:8D:00:00:00 /24 MA-L 🇬🇧 EV4 Limited 20:2B:DA:C0:00:00 /28 MA-M 🇬🇧 Exi Flow Measurement Ltd 00:50:C2:94:50:00 /36 IAB 🇬🇧 Exi Flow Measurement Ltd 70:B3:D5:7A:E0:00 /36 MA-S 🇬🇧 Exi Flow Measurement Ltd 70:B3:D5:AA:F0:00 /36 MA-S 🇬🇧 Exi Flow Measurement Ltd 8C:1F:64:4E:30:00 /36 MA-S 🇬🇧 Exi Flow Measurement Ltd 8C:1F:64:9C:E0:00 /36 MA-S 🇬🇧 Expro North Sea 00:50:C2:D2:40:00 /36 IAB 🇬🇧 Eyeheight Ltd. 00:1D:76:00:00:00 /24 MA-L 🇬🇧 Ezurio Ltd 00:16:A4:00:00:00 /24 MA-L 🇬🇧 Falling Edge Technology Ltd 8C:1F:64:D7:50:00 /36 MA-S 🇬🇧 FarSite Communications Limited 00:50:C2:B2:20:00 /36 IAB 🇬🇧 Fen Systems Ltd 70:B3:D5:B1:E0:00 /36 MA-S 🇬🇧 Fen Technology Limited 00:50:C2:59:90:00 /36 IAB 🇬🇧 Feritech Ltd. 8C:1F:64:6B:30:00 /36 MA-S 🇬🇧 FERRANTI COMPUTER SYS. LIMITED 08:00:40:00:00:00 /24 MA-L 🇬🇧 FFEI Ltd. 00:1A:B4:00:00:00 /24 MA-L 🇬🇧 FilmLight Limited 00:50:C2:5F:C0:00 /36 IAB 🇬🇧 Filtronic plc 00:0E:D2:00:00:00 /24 MA-L 🇬🇧 Fingoti Limited 8C:1F:64:CD:90:00 /36 MA-S 🇬🇧 Finsoft Ltd 00:1B:83:00:00:00 /24 MA-L 🇬🇧 Fire4 Systems UK Ltd 70:B3:D5:E6:90:00 /36 MA-S 🇬🇧 FireAngel Safety Technology Ltd E4:1E:0A:A0:00:00 /28 MA-M 🇬🇧 FireBrick Limited 00:03:97:00:00:00 /24 MA-L 🇬🇧 FireBrick Ltd 9C:89:1E:00:00:00 /24 MA-L 🇬🇧 Fischer Connectors 70:B3:D5:BF:70:00 /36 MA-S 🇬🇧 FIVEMERE, LTD. 00:D0:38:00:00:00 /24 MA-L 🇬🇧 Flashbay Limited 48:9D:18:00:00:00 /24 MA-L 🇬🇧 Fleetwood Electronics Ltd 00:50:C2:19:F0:00 /36 IAB 🇬🇧 Flextronics International 00:21:CC:00:00:00 /24 MA-L 🇬🇧 Flextronics International 14:0D:4F:00:00:00 /24 MA-L 🇬🇧 Flintec UK Ltd. 04:C3:E6:B0:00:00 /28 MA-M 🇬🇧 Focusrite Audio Engineering Limited 00:13:0E:00:00:00 /24 MA-L 🇬🇧 Foenix Coding Ltd 8C:1F:64:DA:40:00 /36 MA-S 🇬🇧 Formula One Management Ltd. 00:50:C2:13:D0:00 /36 IAB 🇬🇧 Fortx FC:62:6F:00:00:00 /24 MA-L 🇬🇧 FOURTHTRACK SYSTEMS 00:60:EB:00:00:00 /24 MA-L 🇬🇧 FOXTECH 20:0F:70:00:00:00 /24 MA-L 🇬🇧 Frame Systems Limited 00:50:C2:8D:C0:00 /36 IAB 🇬🇧 Frazer-Nash Consultancy 8C:1F:64:FA:50:00 /36 MA-S 🇬🇧 Frontier Silicon Ltd 00:22:61:00:00:00 /24 MA-L 🇬🇧 Frontier Silicon Ltd 30:58:90:00:00:00 /24 MA-L 🇬🇧 FRONTIER SMART TECHNOLOGIES LTD 4C:09:FA:00:00:00 /24 MA-L 🇬🇧 FTM Marketing Limited 00:50:C2:9D:C0:00 /36 IAB 🇬🇧 Fujitsu Services Ltd 00:10:8C:00:00:00 /24 MA-L
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