Sichuan Changhong Electric Ltd.

Any device whose MAC address begins with B4:9E:80 has a network interface built by Sichuan Changhong Electric 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

B4:9E:80

Organization

Sichuan Changhong Electric Ltd.

Address

No.35,East MianXin Road,MianYang,Sichaun,China. MianYang SiChuan CN PRC 621000

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.