Shenzhen CPETEK Technology Co.,Ltd.

Any device whose MAC address begins with 28:CB:5C has a network interface built by Shenzhen CPETEK 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

28:CB:5C

Organization

Shenzhen CPETEK Technology Co.,Ltd.

Address

Room 201,building A,No.1 Qianwan 1st Road,Shenzhen Hongkong cooperation zone,Qianhai,Shenzhen,Guangdong,China Shenzhen Guangdong CN 518066

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.