Biostar Microtech international corp.

Any device whose MAC address begins with F4:B5:20 has a network interface built by Biostar Microtech international corp.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

F4:B5:20

Organization

Biostar Microtech international corp.

Address

3F. No. 108-2 Min Chuan Road, Hsin Tien District New Taipei City Taiwan TW 231

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.