Qingdao GoerTek Technology Co., Ltd.

Any device whose MAC address begins with B4:67:E9 has a network interface built by Qingdao GoerTek Technology 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

B4:67:E9

Organization

Qingdao GoerTek Technology Co., Ltd.

Address

5F, No.3 Building, Fortune Center Qingdao Shandong CN 266061

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.