James Czekaj

Any device whose MAC address begins with B4:CE:FE has a network interface built by James Czekaj. 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:CE:FE

Organization

James Czekaj

Address

41716 Waterfall Rd Northville MI US 48168

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.