Shenzhen Xinguodu Technology Co., Ltd.

Any device whose MAC address begins with 40:C8:1F has a network interface built by Shenzhen Xinguodu 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

40:C8:1F

Organization

Shenzhen Xinguodu Technology Co., Ltd.

Address

F17A, JinSong Building, Tairan Industrial & Trade Park, Chegongmiao, Shennan Road，Futian District Shenzhen Guangdong CN 518040

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.