Actions Microelectronics

Any device whose MAC address begins with 40:5A:DD has a network interface built by Actions Microelectronics. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

40:5A:DD

Organization

Actions Microelectronics

Address

201, No. 9 Building, Software Park, KeJiZhongEr Road., GaoXingQu, NanShan Shenzhen Guangdong CN 518057

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.