Shanghai Smart System Technology Co., Ltd

Any device whose MAC address begins with 74:8B:34 has a network interface built by Shanghai Smart System Technology Co., Ltd. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

74:8B:34

Organization

Shanghai Smart System Technology Co., Ltd

Address

Room 902C-1, 560 Shengxia Road, Zhangjiang Hi-Tech Park, Shanghai 201203, China Shanghai Shanghai CN 201210

Source

IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.