GuoTengShengHua Electronics LTD.

Any device whose MAC address begins with 40:56:62 has a network interface built by GuoTengShengHua Electronics 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

40:56:62

Organization

GuoTengShengHua Electronics LTD.

Address

1st floor,No. 15 of Tech North 2nd Road,Nanshan District, Shenzhen Guangdong CN 518000

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.