FCA

Any device whose MAC address begins with EC:FA:03 has a network interface built by FCA. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

EC:FA:03

Organization

FCA

Address

800 Chrylser Dr Auburn Hills MI US 48326

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.