GlobalBeiMing technology (Beijing)Co. Ltd

Any device whose MAC address begins with 28:29:D9 has a network interface built by GlobalBeiMing technology (Beijing)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

28:29:D9

Organization

GlobalBeiMing technology (Beijing)Co. Ltd

Address

Beijing Chaoyang District 8 Guanghua Road A seat 320 rooms Beijing CN 100026

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.