Devices with MAC addresses that start with 28-31-66 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 28-31-66
16,256,250

Estimated Total Devices From Mfg
942,862,500