CAT SYSTEM CO.,LTD.

Any device whose MAC address begins with B0:E3:9D has a network interface built by CAT SYSTEM CO.,LTD.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

B0:E3:9D

Organization

CAT SYSTEM CO.,LTD.

Address

3-147-27 Higasi-sinmachi Hirohata-ku Himeji Hyogo JP 671-1121

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.