Qingdao Intelligent&Precise Electronics Co.,Ltd.

Any device whose MAC address begins with E4:E3:3D has a network interface built by Qingdao Intelligent&Precise Electronics 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

E4:E3:3D

Organization

Qingdao Intelligent&Precise Electronics Co.,Ltd.

Address

No.218 Qianwangang Road Qingdao Shangdong CN 266510

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.