Qualfiber Technology Co.,Ltd

Any device whose MAC address begins with 54:3A:DF has a network interface built by Qualfiber 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

54:3A:DF

Organization

Qualfiber Technology Co.,Ltd

Address

No. 55 building,Zhangkeng Industrial Park,Minzhi,Longhua District,Shenzhen,Guangdong Province,China shenzhen Guangdong CN 518000

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.