NAKAYO Inc

Any device whose MAC address begins with F4:96:51 has a network interface built by NAKAYO 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

F4:96:51

Organization

NAKAYO Inc

Address

1-3-2, Soja-machi Maebashi-shi Gunma JP 371-0853

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.