China Gridcom Co., Ltd

Any device whose MAC address begins with 00:1B:65 has a network interface built by China Gridcom 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

00:1B:65

Organization

China Gridcom Co., Ltd

Address

21/F, Huaneng Building, No. 2068 Shennan Main Road Shenzhen Guangdong CN 0086

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.