Shenzhen FH-NET OPTOELECTRONICS CO.,LTD

Any device whose MAC address begins with 20:57:AF has a network interface built by Shenzhen FH-NET OPTOELECTRONICS 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

20:57:AF

Organization

Shenzhen FH-NET OPTOELECTRONICS CO.,LTD

Address

5/F Building D1 TCL International E City NO.1001 Zhong shan yuan Rd, Nanshan District Shenzhen china Shenzhen GuangDong CN 518055

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.