RFI Engineering

Any device whose MAC address begins with 40:28:14 has a network interface built by RFI Engineering. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

40:28:14

Organization

RFI Engineering

Address

Markerkant 13-76 Almere Flevoland NL 1314AN

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.