Devices with MAC addresses that start with B4-D0-A9 were manufactured by China Mobile Group Device Co.,Ltd.

Device Manufacturer
China Mobile Group Device Co.,Ltd.

Manufacturer Location
32 Xuanwumen West Street,Xicheng District
Beijing 100053

Estimated Devices using B4-D0-A9
16,256,250

Estimated Total Devices From Mfg
325,125,000