Wu Qi Technologies,Inc.

Any device whose MAC address begins with D4:13:B3 has a network interface built by Wu Qi Technologies,Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

D4:13:B3

Organization

Wu Qi Technologies,Inc.

Address

14/F, 107 Middle Road, Xiantao Big Data Valley, Yubei District Chongqing Chongqing CN 401120

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.