CONTROL TECHNOLOGY CORPORATION

Any device whose MAC address begins with 00:C0:CB has a network interface built by CONTROL TECHNOLOGY 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

00:C0:CB

Organization

CONTROL TECHNOLOGY CORPORATION

Address

25 SOUTH STREET HOPKINTON MA US 01748

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.