Security Expert Ltd.

Any device whose MAC address begins with A4:FC:CE has a network interface built by Security Expert Ltd.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

A4:FC:CE

Organization

Security Expert Ltd.

Address

75, Ekaterininskaya Street, of. 105 Perm Perm region RU 614000

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.