Tianjin Techua Technology Co., Ltd.

Any device whose MAC address begins with 30:4E:C3 has a network interface built by Tianjin Techua 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

30:4E:C3

Organization

Tianjin Techua Technology Co., Ltd.

Address

12-1-1401 Tianlinyuan Fulicheng Gulouxi Road,Nankai District Tianjin CN 300101

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.