Preferred Robotics, Inc.

Any device whose MAC address begins with 28:3E:0C has a network interface built by Preferred Robotics, 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

28:3E:0C

Organization

Preferred Robotics, Inc.

Address

Otemachi Bldg. 1-6-1 Otemachi Chiyoda-ku Tokyo JP 100-0004

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.