HARTING Electronics GmbH — 3 prefixes (MA-L) + 2 sibling-entity blocks

A MAC address beginning 00:0A:ED, 00:11:FC, or D4:7B:75 belongs to HARTING Electronics GmbH, the German industrial-connectivity manufacturer headquartered in Espelkamp, typically seen on factory-automation networking gear rather than consumer devices.

HARTING Electronics GmbH is the electronics arm of the HARTING Technology Group, a connector and industrial-networking manufacturer founded in 1945. The group operates 22 sales/distribution companies and 14 production plants worldwide, which is why the same corporate family holds OUI blocks under multiple legal-entity names.

Two sibling group entities carry their own separate MA-L registrations rather than sharing HARTING Electronics GmbH's blocks: HARTING Inc. of North America (Elgin, Illinois, US) and HARTING K.K. (Yokohama, Japan). A device from either regional arm will present one of those prefixes, not one of the three above.

The devices most likely to carry a HARTING-assigned MAC are active networking products — the Ha-VIS eCon line of unmanaged industrial Ethernet switches (PoE/PoE+, extended temperature range) and any managed/embedded variants. HARTING's connector lines (Han industrial connectors, ix Industrial, RJ Industrial, M12/M8, T1 Single Pair Ethernet) are largely passive hardware and do not themselves carry MAC addresses.

Third-party lookup tools surface per-prefix "registration dates" for these blocks, but IEEE's public OUI data publishes no assignment date at all — those dates are database artifacts from the scraping tool, not IEEE facts, and should not be attributed to IEEE.

IEEE assignment

00:0A:ED, 00:11:FC, D4:7B:75 → HARTING Electronics GmbH, registered Espelkamp, Nordrhein-Westfalen, Germany [Confirmed] — the IEEE MA-L registry, cross-checked against maclookup.app/vendors/harting-electronics-gmbh (same 3 prefixes)

Registry / block size

MA-L (24-bit OUI) x3 under this registrant string [Confirmed] — IEEE the IEEE MA-L registry / the Wireshark manufacturer database mirror

HQ / country

Wilhelm Harting Str. 1, D-32339 Espelkamp, Nordrhein-Westfalen, Germany [Confirmed] — IEEE MA-L registry address

Company status

active; HARTING Technology Group, founded 1945, industrial connectivity manufacturer with 22 sales/distribution companies and 14 production plants worldwide [Confirmed] — harting.com

Device types

Ha-VIS eCon unmanaged industrial Ethernet switches (PoE/PoE+, extended temp range); industrial connector systems (Han, ix Industrial, RJ Industrial, M12/M8, T1 Single Pair Ethernet) — connectors themselves are passive and do not carry MAC addresses

[Confirmed] — harting.com/en-US/industrial-ethernet-solutions

Notable products

Ha-VIS eCon switch series; Han industrial connector family

Sibling registrant strings (same corporate group, distinct OUI blocks)

HARTING Inc. of North America — 2C:80:65 (MA-L), Elgin, Illinois, US; HARTING K.K. — 10:49:63 (MA-L), Yokohama, Kanagawa, Japan. Group total across all three registrant strings is 5 known MA-L blocks. [Confirmed] — harting.com, maclookup.app

Registration-date caveat

maclookup.app surfaces per-prefix "Registration Date" values (00:0A:ED 2002-10-14; 00:11:FC 2004-08-04; D4:7B:75 2011-03-17), but IEEE's public the IEEE MA-L registry (Registry, Assignment, Organization Name, Organization Address columns only) publishes no assignment date. These are third-party database artifacts, not IEEE facts.

[Confirmed] — maclookup.app/vendors/harting-electronics-gmbh

Security context

No CVE, NVD entry, or CISA ICS-CERT advisory naming HARTING was found in this research pass; reported as "not found in this pass," not as an affirmative absence of vulnerabilities — a deeper vendor-specific advisory search was not performed. [Unknown] — general CVE/NVD/CISA search, this pass only

Related vendors

HARTING Inc. of North America (sibling group entity, 2C:80:65); HARTING K.K. (sibling group entity, 10:49:63)

Analyst note

A HARTING Electronics GmbH OUI (00:0A:ED, 00:11:FC, D4:7B:75) indicates factory/industrial-automation networking hardware, most likely a Ha-VIS eCon switch or embedded interface — not a consumer device. A device from HARTING's North American or Japanese regional entities will present a different prefix (2C:80:65 or 10:49:63), not one of these three.