HarbinChengT

Harbin Cheng Tian Technology Development Co., Ltd. — 1 praefixum OUI

1 praefixum OUI

Praefixum OUI	MAC Range
70:B3:D5:CF:40	70:B3:D5:CF:40:00:00:00 ~ 70:B3:D5:CF:40:FF:FF:FF