Le Shi Zhi Xin Electronic Technology (Tianjin) Limited

Any device whose MAC address begins with D4:B1:69 has a network interface built by Le Shi Zhi Xin Electronic Technology (Tianjin) 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:B1:69

Organization

Le Shi Zhi Xin Electronic Technology (Tianjin) Limited

Address

,Le Shi Building, No.105 Yaojiayuan Road,Chaoyang District,Beijing,China beijing beijing CN 100025

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.