Marking System Technology Co., Ltd.

Any device whose MAC address begins with 6C:38:38 has a network interface built by Marking System Technology 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

6C:38:38

Organization

Marking System Technology Co., Ltd.

Address

76-1, Hirakawa Yokomichi Joyo-shi Kyoto JP 610-0101

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.