Harman/Becker Automotive Systems GmbH — 9 prefixes (MA-L)

Harman/Becker Automotive Systems GmbH holds nine MA-L (24-bit OUI) blocks in the IEEE registry, registered to a single German address: Becker-Göring-Straße 16, 76307 Karlsbad, Baden-Württemberg. The company is the automotive-electronics arm built around the historic Becker car-audio/navigation brand, now part of Harman International — itself a wholly owned Samsung Electronics subsidiary since the ~$8 billion acquisition closed in March 2017. These OUIs land almost exclusively on in-vehicle hardware: infotainment head units (navigation, audio, HMI/voice, multimedia) and telematic control units shipped into Mercedes-Benz, Audi, BMW, Porsche, Ferrari, Rolls-Royce, Hyundai and other marques — not consumer Wi-Fi or enterprise networking gear. The most useful triage signal is contextual: a device presenting a Harman/Becker OUI on a corporate or home network is almost certainly an embedded automotive unit (a tethered or parked connected car, a developer bench, or a mis-identified device) and is worth a second look. One registry quirk to record faithfully: block 28:56:C1 carries an alternate US address (15th Fl, 400 Atlantic Street, Stamford, CT 06901) rather than the German one; it is reproduced as-is from IEEE and not "corrected." A second data note: a third-party IAB (00:50:C2:62:0···) is sometimes grouped under Harman in MAC-lookup databases, but the cached IEEE registrant string "Harman/Becker Automotive Systems GmbH" carries no IAB/MA-M/MA-S block — only the nine MA-L OUIs — so that allocation is treated as a separate/legacy Harman entity and tagged accordingly.

IEEE assignment

9 MA-L prefixes → "Harman/Becker Automotive Systems GmbH", registered Karlsbad, Baden-Württemberg, DE [Confirmed] — IEEE MA-L (cached oui.csv)

Registry / block size

MA-L (24-bit OUI); all 9 assignments are MA-L; no MA-M or MA-S found under this registrant string [Confirmed] — IEEE MA-L (oui.csv), MA-M/MA-S registry check (mam.csv / oui36.csv). NOTE: IEEE's public OUI data publishes NO assignment/registration date (oui.csv columns are only Registry, Assignment, Organization Name, Organization Address); third-party "date registered" values (e.g. 2007-06-16 for 00:1C:D7, 2025-09-30 for FC:F8:61 on maclookup.app) are database artifacts, not IEEE facts.

HQ / country

Becker-Göring-Straße 16, 76307 Karlsbad-Ittersbach, Baden-Württemberg, DE 76307 [Confirmed] — IEEE MA-L, fccid.io/T8GP114, en.wikipedia.org/wiki/Harman_Becker_Automotive_Systems

Alternate registry address

block 28:56:C1 is registered to 15th Fl, 400 Atlantic Street, Stamford, CT 06901, US — recorded as-is from the IEEE MA-L registry (all other blocks carry the German Karlsbad address) [Confirmed] — IEEE MA-L (oui.csv)

Company status

active; automotive division of Harman International (Samsung Electronics subsidiary since March 2017) [Confirmed] — en.wikipedia.org/wiki/Harman_Becker_Automotive_Systems

Device types

automotive infotainment head units (navigation, audio, HMI/voice, multimedia) and telematic control units (TCUs; e.g. CONMOD, CONBOXRD, TCAM3); supplied to Mercedes-Benz, Audi, BMW, Porsche, Ferrari, Rolls-Royce, Hyundai and others [Confirmed] — en.wikipedia.org/wiki/Harman_Becker_Automotive_Systems, fccid.io/T8GP114, fccid.io/T8G9099

Notable products

in-vehicle infotainment head units and telematic control units (Becker-brand automotive navigation lineage)

Verified prefixes (all MA-L, Harman/Becker Automotive Systems GmbH)

00:1C:D7, 28:56:C1, 38:45:54, 9C:DF:03, 9C:F5:5F, A0:56:B2, B0:BC:7A, F8:E8:77, FC:F8:61 [Confirmed] — IEEE MA-L (oui.csv), maclookup.app/vendors/harman-becker-automotive-systems-gmbh

Wireless technologies

Bluetooth EDR + BLE, Wi-Fi (2.4/5 GHz, MIMO-capable), 4G LTE, 5G (TCAM3 TCU), GNSS; FCC ID T8GP114 (TCU) certified for BT + Wi-Fi + LTE + GNSS, FCC ID T8G9099 (head unit) covers BT/WLAN/Kleer [Confirmed] — fccid.io/T8GP114, fccid.io/T8G9099

Parent company

Harman International Industries (wholly owned subsidiary of Samsung Electronics since March 2017, ~$8B acquisition); Becker is the automotive infotainment/navigation brand within Harman [Confirmed] — en.wikipedia.org/wiki/Harman_Becker_Automotive_Systems

Data note (IAB)

an IAB allocation 00:50:C2:62:0··· is grouped under Harman in some third-party MAC-lookup data, but the cached IEEE registrant "Harman/Becker Automotive Systems GmbH" holds no IAB/MA-M/MA-S block — only the 9 MA-L OUIs. Treat that IAB as a separate/legacy Harman entity, not this registrant. [Likely] — IEEE MA-L (oui.csv) vs. maclookup.app/vendors/harman-becker-automotive-systems-gmbh

Security context

CVE-2023-40291 (published 2023-08-14) — Harman infotainment firmware build 20190525031613 permits unauthenticated root SSH via a USB-to-Ethernet dongle using a hardcoded internal project name as the password; CVSS v3 6.8 Medium (AV:P — physical access required), EPSS ≈ 0.001, no public patch documented. Separately, CISA ICS advisory ICSA-15-260-01 (2015) covered a missing-authorization flaw in the Harman-Kardon Uconnect (FCA RA3/RA4) unit allowing remote access to vehicle subsystems. Harman acquired automotive-cybersecurity firm TowerSec in 2016. [Confirmed] — tenable.com/cve/CVE-2023-40291, cisa.gov/news-events/ics-advisories/icsa-15-260-01, harman.com/report-vulnerability

IANA reference

none — no IANA protocol/port reference applies to a vendor OUI entry; the IANA Reference column stays blank [Confirmed] — N/A

Related vendors

Harman International (parent); Samsung Electronics (ultimate parent); Becker (automotive brand)

Analyst note

a Harman/Becker OUI almost certainly identifies an embedded automotive unit (infotainment head unit or TCU in a connected car). There is no known consumer-networking product line (routers/switches/APs) under this brand, so appearance on a corporate or home network is unusual and worth investigating. German registrant; no covered-list restrictions noted. The CVE-2023-40291 hardcoded-credential pattern requires physical access but is worth flagging for any in-vehicle device triage.