JW Electronics Co., Ltd.

Any device whose MAC address begins with 3C:39:C3 has a network interface built by JW Electronics 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

3C:39:C3

Organization

JW Electronics Co., Ltd.

Address

3A17, No. 5 Hsin-yi Rd., Sec. 5 Taipei TW 110

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.