Conversion Sound Inc.

Any device whose MAC address begins with F4:73:CA has a network interface built by Conversion Sound Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

F4:73:CA

Organization

Conversion Sound Inc.

Address

960 N. Northwest Hwy Park Ridge IL US 60068

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.