Research Products Corporation

Any device whose MAC address begins with B4:82:55 has a network interface built by Research Products Corporation. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

B4:82:55

Organization

Research Products Corporation

Address

1015 E. Washington Ave Madison WI US 53703

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.