Brusa Elektronik AG

Any device whose MAC address begins with B4:0B:7A has a network interface built by Brusa Elektronik AG. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

B4:0B:7A

Organization

Brusa Elektronik AG

Address

Neudorf 14 Sennwald St. Gallen CH 9466

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.