Steffes Corporation

Any device whose MAC address begins with 50:D2:74 has a network interface built by Steffes Corporation. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

50:D2:74

Organization

Steffes Corporation

Address

3050 Highway 22 North Dickinson ND US 58601

Source

IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.