Beijing Netpower Technologies Inc.

Any device whose MAC address begins with 70:D0:81 has a network interface built by Beijing Netpower Technologies Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

70:D0:81

Organization

Beijing Netpower Technologies Inc.

Address

Room 201, Block B, NO. 15 Building, EastZone Courtyard10, Xibeiwang East Road Haidian District, Beijing CN 100094

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.