Nihon Dengyo Kousaku

Any device whose MAC address begins with 68:23:4B has a network interface built by Nihon Dengyo Kousaku. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

68:23:4B

Organization

Nihon Dengyo Kousaku

Address

shinmachi 21-1 kawagoe-shi saitama JP 350-1107

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.