K.A. Schmersal GmbH & Co. KG — 2 prefixes (MA-L)

A MAC address starting with 14:C3:C2 or 00:0D:9C belongs to K.A. Schmersal GmbH & Co. KG, a German industrial machine-safety manufacturer, typically seen on networked safety switches, safety sensors, and fieldbus safety gateways rather than consumer networking gear.

Schmersal is headquartered in Wuppertal, North Rhine-Westphalia, and holds two IEEE MA-L (48-bit) OUI assignments registered to two separate German addresses: Möddinghofe 30 in Wuppertal and Im Ostpark 2 in Wettenberg, Hesse. Both prefixes appear only in the OUI registry, with no matching MAM or OUI36 entries.

The company markets itself as an international market leader in machine safety, with a catalog spanning safety interlock switches, safety relays and monitoring modules, light curtains, IO-Link Safety devices, and an SD Gateway fieldbus product line. This product context, combined with holding two separate OUI blocks, places Schmersal well above a bare single-OUI registration.

Third-party aggregator maclookup.app lists a 2003-06-30 "first seen" and 2021-11-18 "last modified" date for this vendor entry, but these describe when the aggregator's own database indexed the record — IEEE's public the IEEE MA-L registry publishes no registration-date field at all, so neither date should be read as an IEEE assignment date.

IEEE assignment

14:C3:C2 and 00:0D:9C (both MA-L) → K.A. Schmersal GmbH & Co. KG [Confirmed] — the IEEE MA-L registry 14C3C2, the IEEE MA-L registry 000D9C

Registry / block size

MA-L (24-bit OUI) x2; no matching MAM or OUI36 entries for this vendor [Confirmed] — the IEEE MA-L registry 14C3C2, the IEEE MA-L registry 000D9C

HQ / country

two registered addresses — Möddinghofe 30, Wuppertal, NRW, DE 42279 (14:C3:C2) and Im Ostpark 2, Wettenberg, Hessen, DE 35435 (00:0D:9C) [Confirmed] — the IEEE MA-L registry 14C3C2, the IEEE MA-L registry 000D9C

Company status

active [Likely] — https://www.schmersal.com/en/company/

Device types

safety interlock switches, safety sensors, safety relays/monitoring modules, light curtains, IO-Link Safety devices, SD Gateway fieldbus gateway, Safety Fieldbox SFB [Likely] — https://www.schmersal.com/en/company/, https://device.report/manual/8739101 (manual title only; page content returned HTTP 403, not fetched)

Notable products

safety switches, safety sensors and relays, light curtains, fieldbus/Ethernet safety gateways [Likely] — https://www.schmersal.com/en/products

Verified sample prefixes (both MA-L, K.A. Schmersal GmbH & Co. KG)

14:C3:C2, 00:0D:9C [Confirmed] — the IEEE MA-L registry 14C3C2, the IEEE MA-L registry 000D9C

Historic block

none identified [Unknown] — no historic or pre-registration block surfaced in any source checked

Special note

maclookup.app shows "First Seen: 2003-06-30" and "Last Modified: 2021-11-18" for this vendor — these are third-party database-scrape artifacts describing the aggregator's own indexing, not IEEE registration dates. IEEE's public the IEEE MA-L registry publishes no date field at all, so neither date may be attributed to IEEE.

[Confirmed] — https://maclookup.app/vendors/k-a-schmersal

Related vendors

none identified [Unknown] — no subsidiary or affiliate OUI registration found

Analyst note

14:C3:C2 and 00:0D:9C are standard company-owned MA-L blocks (not shared IEEE Registration Authority bases), so a MAC in either range is attributable to Schmersal; absence of a match does not rule out Schmersal, since other unconfirmed prefixes may exist. Treat as supporting, not sole, evidence for OT/ICS asset inventory.