Marquardt — 5 prefixes (MA-L) across global subsidiaries

Marquardt holds five IEEE MA-L blocks, each registered to a different legal entity in the group rather than to a single corporate name — a pattern worth flagging because OUI lookups will surface several distinct "Marquardt" strings depending on which subsidiary manufactured the hardware. The parent block 70:2F:86 belongs to Marquardt GmbH at Schloss-Strasse 16, Rietheim-Weilheim, Germany (Baden-Württemberg), the group's headquarters; F4:A1:7F belongs to the Chinese manufacturing arm, Marquardt Electronics Technology (Shanghai) Co. Ltd; 04:AE:C7 to the US entity in Cazenovia, New York; AC:DB:22 to Marquardt Schaltsysteme SCS in Sibiu, Romania; and 78:A4:BA to Marquardt India Pvt Ltd in Pune. All five are Large (MA-L, 24-bit) assignments; no MA-M or MA-S blocks were found in the registry. Marquardt is a family-run automotive-electronics manufacturer founded in 1925, with roughly 10,000 employees across 22 locations and FY revenue near €1.4 billion. Its products are electromechanical and electronic switches, drive-authorization systems (keyless and smartphone-based vehicle access over NFC, BLE, and UWB — the PnD3 platform combines all three), battery-management systems, and human-machine-interface modules for automotive OEMs, plus controls for power tools and household appliances. The practical consequence for asset classification: a globally-administered address in any of these five ranges most likely identifies an automotive embedded module — an ECU, vehicle-access controller, or battery-management unit — rather than standard enterprise IT equipment. IEEE publishes no registration dates, so no "date registered" should ever be attached to these prefixes.

IEEE assignment

5 prefixes (MA-L) across distinct Marquardt legal entities — 70:2F:86 Marquardt GmbH (DE), F4:A1:7F Marquardt Electronics Technology (Shanghai) Co. Ltd (CN), 04:AE:C7 Marquardt (US), AC:DB:22 Marquardt Schaltsysteme SCS (RO), 78:A4:BA Marquardt India Pvt Ltd (IN) [Confirmed] — IEEE MA-L (local registry oui.csv; corroborated standards-oui.ieee.org/oui/oui.txt)

Registry / block size

MA-L (24-bit OUI; 2^24 ≈ 16.7M addresses per block); 5 blocks total. No MA-M (mam.csv) or MA-S (oui36.csv) assignments found [Confirmed] — IEEE registry files. NOTE: IEEE's public OUI data publishes NO assignment/registration date (oui.csv columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" on third-party tools is a database artifact, not an IEEE fact.

HQ / country

Schloss-Strasse 16, Rietheim-Weilheim, DE 78604 (Baden-Württemberg); parent Marquardt GmbH registry address [Confirmed] — IEEE MA-L, en.wikipedia.org/wiki/Marquardt_Group

Company status

active; family-run, ~10,000 employees, 22 locations on 4 continents, FY revenue ~€1.4 billion [Confirmed] — en.wikipedia.org/wiki/Marquardt_Group, csa-iot.org/member/marquardt-gmbh

Founded

1925 (company founding date only — NOT an IEEE OUI registration date) [Confirmed] — en.wikipedia.org/wiki/Marquardt_Group

Industry

automotive electronics / electromechanical switches / mechatronics — segments: Automotive (drive authorization, operating components, battery management), Mechatronic Devices, Power and Energy Solutions [Confirmed] — en.wikipedia.org/wiki/Marquardt_Group, marquardt.com

Device types

automotive embedded ECUs and connected-vehicle systems — drive-authorization modules (keyless / smartphone access via NFC/BLE/UWB), electronic ignition-start switches, operating components (seat adjustment, rotary light switches), battery-management systems (12–800 V, EV / fuel-cell), HMI modules; also switches/controls for power tools and household appliances [Likely] — marquardt.com/us/solutions/drive-authorization-systems, csa-iot.org/member/marquardt-gmbh, ibselectronics.com/manufacturers/marquardt

Connectivity standards

member of the Connectivity Standards Alliance (CSA-IoT); products use NFC, BLE, and UWB (PnD3 platform combines UWB+NFC+BLE). Specific CSA certifications (Matter/Zigbee/Aliro) not publicly detailed [Likely] — csa-iot.org/member/marquardt-gmbh, marquardt.com/us/press-pages/pressemitteilungen/2021/pnd3-platform

Security context

engaged PlaxidityX (automotive cybersecurity specialist) in late 2024 for vulnerability management, SBOM/DevSecOps, and ISO/SAE 21434 compliance. No public CVEs or advisories attributed to Marquardt hardware were located; absence of reporting is not a clean bill of health — BLE/NFC/UWB vehicle-access systems sit in an actively-researched threat category (relay / keyless-entry attacks), though no Marquardt-specific incident was found [Likely] — prnewswire.com (PlaxidityX partnership), plaxidityx.com/company/newsroom/press-releases

Sample / verified prefixes (all MA-L)

70:2F:86, F4:A1:7F, 04:AE:C7, AC:DB:22, 78:A4:BA [Confirmed] — IEEE MA-L

Related entities

Marquardt Electronics Technology (Shanghai) Co. Ltd; Marquardt Schaltsysteme SCS (Sibiu, RO); Marquardt India Pvt Ltd (Pune, IN); Marquardt (Cazenovia, NY, US) — all hold their own MA-L blocks within the group [Confirmed] — IEEE MA-L

Analyst note

a globally-administered address in any of the five ranges most likely identifies an automotive embedded module (ECU, access controller, or BMS unit), useful for OT / vehicle-network asset classification rather than enterprise IT inventory. Marquardt does not publicly disclose the underlying NIC chipset for these registrations. [Likely] — IEEE MA-L, en.wikipedia.org/wiki/Marquardt_Group