Shenzhen Yichen Technology Development Co.,LTD

Any device whose MAC address begins with 04:5F:A7 has a network interface built by Shenzhen Yichen Technology Development 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

04:5F:A7

Organization

Shenzhen Yichen Technology Development Co.,LTD

Address

5/F Honghualing 2nd Industry Zone,Xili Town 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.