Devices with MAC addresses that start with A4-45-19 were manufactured by Xiaomi Communications Co Ltd

Device Manufacturer
Xiaomi Communications Co Ltd

Manufacturer Location
The Rainbow City of China Resources
NO.68, Qinghe Middle Street Haidian District, Beijing 100085

Estimated Devices using A4-45-19
16,256,250

Estimated Total Devices From Mfg
1,333,012,500