Turbulence Design Inc.

Any device whose MAC address begins with C4:69:3E has a network interface built by Turbulence Design Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

C4:69:3E

Organization

Turbulence Design Inc.

Address

1-3-14 Koshigaya-City Saitama JP 343-0813

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.