Shenzhen Dynamax Software Development Co.,Ltd.

Any device whose MAC address begins with 28:CD:9C has a network interface built by Shenzhen Dynamax Software Development 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:CD:9C

Organization

Shenzhen Dynamax Software Development Co.,Ltd.

Address

Room 425-426,Block A,No.30,Hangkong Road Shenzhen Guangdong CN 518000

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.