Devices with MAC addresses that start with C4-66-99 were manufactured by vivo Mobile Communication Co., Ltd.

Device Manufacturer
vivo Mobile Communication Co., Ltd.

Manufacturer Location
#283,BBK Road
Wusha,Chang'An DongGuan City,Guangdong, 523860

Estimated Devices using C4-66-99
16,256,250

Estimated Total Devices From Mfg
942,862,500