Jiangsu Hengxin Technology Co.,Ltd.

Any device whose MAC address begins with B4:7C:59 has a network interface built by Jiangsu Hengxin 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

B4:7C:59

Organization

Jiangsu Hengxin Technology Co.,Ltd.

Address

No.138 Taodu Road,Yixing city,Jiangsu Province,China Yixing Jiangsu CN 214200

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.