Jinan USR IOT Technology Limited

Any device whose MAC address begins with D4:AD:20 has a network interface built by Jinan USR IOT Technology Limited. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

D4:AD:20

Organization

Jinan USR IOT Technology Limited

Address

Floor F1 & Part of Floor F2, Building No. 9,Diya shuang chuang Industrial Zone, No.2566,Century Main Road,Gaoxin District Jinan,Shandong China Shandong Jinan CN 250014

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.