BASIC Co.,Ltd.

Any device whose MAC address begins with BC:81:99 has a network interface built by BASIC 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

BC:81:99

Organization

BASIC Co.,Ltd.

Address

Keiefu-Building 9F Minato-ku Tokyo JP 108-0014

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.