BSP Co., Ltd.

Any device whose MAC address begins with 04:B4:66 has a network interface built by BSP 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

04:B4:66

Organization

BSP Co., Ltd.

Address

162-10 Gumi Gyeungsangbuk Do KR 730-902

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.