Tianjin China-Silicon Microelectronics Co., Ltd.

Any device whose MAC address begins with 00:1D:74 has a network interface built by Tianjin China-Silicon Microelectronics 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

00:1D:74

Organization

Tianjin China-Silicon Microelectronics Co., Ltd.

Address

301,3F Building 211,No.214 Hongqi Road, Nankai District, Tianjin China Tianjin CN 300190

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.