Shenzhen Libre Technology Co., Ltd

Any device whose MAC address begins with 18:66:C7 has a network interface built by Shenzhen Libre 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

18:66:C7

Organization

Shenzhen Libre Technology Co., Ltd

Address

634, Tian Hui Building #B, You Song Lu, Long Hua District Shenzhen CN 511700

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.