Beckhoff Automation GmbH — 00:01:05 (MA-L)

Beckhoff Automation GmbH holds the MA-L block 00:01:05, registered to the company's Verl, Germany address (Eiserstraße 5, 33415 Verl, North Rhine-Westphalia). Beckhoff is a German industrial-automation manufacturer founded in 1980, specialising in PC-based control technology: Industrial PCs (IPC), the CX-series Embedded PCs (DIN-rail controllers), EtherCAT I/O terminals and bus couplers, TwinCAT automation software, and servo/motion drives. The company invented EtherCAT (Ethernet for Control Automation Technology, standardised as IEC 61158) and co-founded the EtherCAT Technology Group in 2003. The single 00:01:05 prefix is corroborated by Beckhoff's own product documentation, which cites MAC addresses in the 00:01:05:xx:xx:xx range on its hardware. The classification consequence is the practical value of this entry: a device bearing this OUI is almost certainly an OT/ICS asset — a PLC, IPC, Embedded PC, or EtherCAT coupler on a factory floor, machine tool, packaging line, or building-automation network — not a consumer or general IT endpoint. That matters for security posture, because Beckhoff controllers have a public CVE history (TwinCAT/BSD authentication bypass and XSS issues, OS-command-injection in the TwinCAT Package Manager, and Device Manager authentication-bypass / RCE advisories tracked by CISA), and the ADS automation protocol historically shipped without encryption. Network segmentation and OT-monitoring best practices apply to any segment where this prefix appears. IEEE publishes no registration date for this or any OUI; no date is asserted here.

IEEE assignment

00:01:05 → Beckhoff Automation GmbH, registered Eiserstraße 5, Verl, NRW, DE 33415 [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv line 5903)

Registry / block size

MA-L (24-bit OUI; ~16.7M addresses) [Confirmed] — IEEE MA-L. 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

Eiserstraße 5, 33415 Verl, NRW, DE (IEEE registry address). Corporate global HQ in Verl, Germany; US subsidiary Beckhoff Automation LLC in Savage, Minnesota (established 1999). [Confirmed] — IEEE MA-L; beckhoff.com/en-us/company

Company status

active [Confirmed] — beckhoff.com/en-us/company

Founded

1980 [Confirmed] — beckhoff.com/en-us/company

Company profile

German industrial-automation manufacturer specialising in PC-based control technology; invented EtherCAT (IEC 61158) and co-founded the EtherCAT Technology Group (2003, now 7,000+ members). 2024 global revenue ~€1.24 billion; ~5,450 employees. [Confirmed] — beckhoff.com/en-us/company, beckhoff.com/en-us/products/i-o/ethercat

Device types

Industrial PCs (IPC; e.g. C6015, C6030), Embedded PCs (CX series), Programmable Automation Controllers (PAC/PLC), EtherCAT bus couplers (BK1150, BK1120, BK1250), EtherCAT I/O terminals, Ethernet switches, PCI/PCIe fieldbus cards, servo drives — all OT/ICS equipment [Confirmed] — beckhoff.com/en-us/products/ipc/embedded-pcs, beckhoff.com/en-us/products/i-o/ethercat-terminals

Vendor name variants

"Beckhoff Automation GmbH" (IEEE registry); "Beckhoff Automation GmbH & Co. KG" (legal entity name used in security advisories) [Confirmed] — download.beckhoff.com product-security advisory

OUI corroboration

Beckhoff's own InfoSys documentation cites 00:01:05:xx:xx:xx as its hardware MAC prefix (e.g. 00:01:05:34:05:84). Third-party aggregators list only this single OUI block for Beckhoff. [Confirmed] — infosys.beckhoff.com, udger.com MAC vendor lookup

Additional assignments

none found. Only one OUI assignment (00:01:05, MA-L) appears for Beckhoff across all three cached registries (oui.csv MA-L, mam.csv MA-M, oui36.csv MA-S). [Confirmed] — enrichment/registries (oui.csv hit; no mam.csv/oui36.csv hits)

Industries

manufacturing, machine building, packaging, intralogistics, metalworking, machine tools, building automation, scientific research, additive manufacturing, e-commerce/retail [Confirmed] — beckhoff.com/en-us/company

Security context

devices on this OUI are OT/ICS assets across critical manufacturing. Public CVEs include CVE-2024-41173/41174/41175/41176 (TwinCAT/BSD IPC-Diagnostics — auth bypass, XSS), CVE-2024-8934 (CVSS v3 6.5, OS command injection in TwinCAT Package Manager; CISA advisory), and 2025 CVE-2025-41726/41727 (authenticated RCE / Device Manager auth bypass). The ADS protocol historically shipped without encryption, enabling packet forgery on observable traffic. Network segmentation / OT monitoring apply. [Confirmed] — securityweek.com, industrialcyber.co, CISA advisory coverage, cvedetails.com vendor 11489

IANA reference

not applicable to an OUI entry; none invented [Unknown]

Analyst note

a globally-administered Beckhoff OUI reliably identifies genuine Beckhoff OT/ICS hardware; treat any segment carrying 00:01:05 as an industrial-control network and apply OT segmentation/monitoring.