JiQiDao

Any device whose MAC address begins with C4:1C:9C has a network interface built by JiQiDao. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

C4:1C:9C

Organization

JiQiDao

Address

No.19, SuYuan Avenue, Jiangning District NanJing Jiangsu CN 210000

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.