EDMI Europe Ltd — 3 prefixes (MA-L)

A MAC address beginning 44:11:02, 1C:23:4F, or E4:FE:D9 belongs to EDMI Europe Ltd, a UK-based manufacturer whose hardware typically shows up as smart electricity and gas meters, or the communications hubs and gateways that link them, on UK smart-metering networks.

EDMI Europe Ltd is registered in Newcastle upon Tyne and operates as part of the wider EDMI group, itself reportedly owned by Japan-listed Osaki Electric Co., Ltd. The company supplies SMETS2-compliant meters and Zigbee-based Home Area Network gateways under the UK's national smart meter program, with a named product line certified by the UK Smart Energy Code Company registry.

The cached IEEE registry confirms all three MA-L blocks are assigned to EDMI Europe Ltd, consistent with a manufacturer that produces multiple device families — meters plus separate communications hardware — over time. IEEE's own the IEEE MA-L registry publishes no assignment dates for any MAC prefix; a "registered on" date some lookup tools show for 1C:23:4F is a database artifact, not an IEEE fact.

No independently confirmed CVEs or security incidents name EDMI or these prefixes specifically. The company's reported scale — over 9 million SMETS2 devices deployed for Great Britain — and its regulator-adjacent product certifications give this entry more substance than a bare single-OUI registration, which is why it clears the bar for a full vendor page rather than staying a 410.

IEEE assignment

3 prefixes → EDMI Europe Ltd, registered Newcastle upon Tyne, United Kingdom [Confirmed] — the IEEE MA-L registry

Registry / block size

MA-L (24-bit OUI); 3 identified prefixes: 44:11:02, 1C:23:4F, E4:FE:D9 [Confirmed] — the IEEE MA-L registry

HQ / country

The Grainger Suite, Dobson House, Newcastle upon Tyne, United Kingdom NE3 3PF [Confirmed] — the IEEE MA-L registry

Company status

active [Likely] — edmi-meters.com (live product and press pages; not cross-checked against UK Companies House filing status)

Device types

smart electricity meters, smart gas meters, in-home communications hubs, Zigbee HAN gateways [Confirmed] — edmi-meters.com, smartenergycodecompany.co.uk, csa-iot.org

Notable products

CS-10/11, CS-20/21, ES-30B, ES-1X electricity meters; GS-60B/60C, GS-68B gas meters; EDMI CAD Gateway (Zigbee Consumer Access Device) [Confirmed] — smartenergycodecompany.co.uk, csa-iot.org

Parent company

EDMI Ltd, itself reportedly owned by Osaki Electric Co., Ltd (Tokyo Prime Market listed) [Likely] — rocketreach.co

Deployment scale

9M+ SMETS2-compliant devices deployed for Great Britain's smart meter rollout [Confirmed] — prnewswire.co.uk press release

Third-party date artifact

maclookup.app states prefix 1C:23:4F "was registered on 03 December 2015" — a database scrape artifact, NOT an IEEE-published fact [Confirmed as third-party claim only] — maclookup.app

Security context

no CVEs, breach reports, or abuse/security-incident writeups found naming EDMI or these OUI prefixes specifically in this pass [Unknown] — no source found

Related vendors

EDMI Ltd (parent), Osaki Electric Co., Ltd (reported ultimate parent)

Analyst note

three separate MA-L assignments plus named, regulator-adjacent product certifications and a large reported deployment place this above a bare single-OUI shell registration; org status and security posture are not independently confirmed.