Guangzhou Dawei Communication Co.,Ltd

Any device whose MAC address begins with B4:DC:09 has a network interface built by Guangzhou Dawei Communication 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:DC:09

Organization

Guangzhou Dawei Communication Co.,Ltd

Address

Zone A 906#, International Business Incubator, No.3 Juquan Road, Huangpu District Guangzhou Guangdong CN 510660

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.