Gemtek Technology Co., Ltd.

Any device whose MAC address begins with 58:13:D3 has a network interface built by Gemtek 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

58:13:D3

Organization

Gemtek Technology Co., Ltd.

Address

No.15-1 Zhonghua Road Hukou Hsinchu TW 30352

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.