Henan Chengshi NetWork Technology Co.，Ltd

Any device whose MAC address begins with B8:C3:BF has a network interface built by Henan Chengshi NetWork 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

B8:C3:BF

Organization

Henan Chengshi NetWork Technology Co.，Ltd

Address

Ruhe Road South，Kunlun Road West，Zhongyuan District，Zhengzhou，Henan，P.R.China，450007 Zhengzhou Henan CN 450007

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.