Shenzhenshi Xinzhongxin Co., Ltd

Any device whose MAC address begins with A4:CD:23 has a network interface built by Shenzhenshi Xinzhongxin 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

A4:CD:23

Organization

Shenzhenshi Xinzhongxin Co., Ltd

Address

Building A3, Donghuan Industrial Zone, Nanpu Road, Shajing Town, Baoan District Shenzhen Guangdong CN 518125

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.