C3PO S.A.

Any device whose MAC address begins with 84:C7:A9 has a network interface built by C3PO S.A.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

84:C7:A9

Organization

C3PO S.A.

Address

Alejandro Goicoechea 6 Local 9 Sant Just Desvern Barcelona ES ES08960

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.