FonSee Technology Inc.

Any device whose MAC address begins with BC:99:BC has a network interface built by FonSee Technology Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

BC:99:BC

Organization

FonSee Technology Inc.

Address

14F-2, No.32, Gaotie 2nd Rd., Zhubei City Hsinchu County TW 302

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.