Hong Kong Bouffalo Lab Limited

Any device whose MAC address begins with B4:E8:42 has a network interface built by Hong Kong Bouffalo Lab Limited. 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:E8:42

Organization

Hong Kong Bouffalo Lab Limited

Address

RM 1903, 19/F Lee Garden One 33 Hysan Avenue, Causeway Bay HongKong HK 999077

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.