ProQuent Systems

Any device whose MAC address begins with 00:08:B1 has a network interface built by ProQuent Systems. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:08:B1

Organization

ProQuent Systems

Address

67 Forest Street Marlboro MA US 01752

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.