AlphaTheta Corporation

Any device whose MAC address begins with C8:3D:FC has a network interface built by AlphaTheta 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

C8:3D:FC

Organization

AlphaTheta Corporation

Address

6F,Yokohama i-Mark Place, 4-4-5 Minatomirai, Nishi-ku Yokohama Kanagawa JP 220-0012

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.