Nanjing Qinheng Microelectronics Co., Ltd.

Any device whose MAC address begins with 54:14:A7 has a network interface built by Nanjing Qinheng 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

54:14:A7

Organization

Nanjing Qinheng Microelectronics Co., Ltd.

Address

No.18, Ningshuang Road Nanjing Jiangsu CN 210012

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.