Hangzhou Hikvision Digital Technology Co.,Ltd.

Any device whose MAC address begins with C4:2F:90 has a network interface built by Hangzhou Hikvision Digital 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

C4:2F:90

Organization

Hangzhou Hikvision Digital Technology Co.,Ltd.

Address

No.469,Jianghui Road Hangzhou Zhejiang CN 310052

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.