Winstars Technology Ltd

Any device whose MAC address begins with 80:3F:5D has a network interface built by Winstars Technology 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

80:3F:5D

Organization

Winstars Technology Ltd

Address

Block4,Taisong Industrial Park, DaLang Street, LongHua Town , Bao'an District Shenzhen Guangdong CN 518109

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.