The Electric Controller and Manufacturing Co., LLC

Any device whose MAC address begins with 28:FC:51 has a network interface built by The Electric Controller and Manufacturing Co., LLC. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

28:FC:51

Organization

The Electric Controller and Manufacturing Co., LLC

Address

PO Box 468 Saint Matthews SC US 29135

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.