SEMA Electronics(HK) CO.,LTD

Any device whose MAC address begins with B4:FC:75 has a network interface built by SEMA Electronics(HK) CO.,LTD. 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:FC:75

Organization

SEMA Electronics(HK) CO.,LTD

Address

Xialingbei Industrial Zone Liaobu, Dongguan Guangdong CN 523411

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.