Genbyte Technology Inc.

Any device whose MAC address begins with 40:31:1B has a network interface built by Genbyte Technology 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

40:31:1B

Organization

Genbyte Technology Inc.

Address

Building 4, 1st to 6th Floor, Huahongxintong Industrial Park, Intersection of Genyu Road and Nanming Road, Yutang Street, Guangming New District, Shenzhen City. Shenzhen Guangdong CN 518107

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.