Nanjing SAC Power Grid Automation Co., Ltd.

Any device whose MAC address begins with 6C:83:66 has a network interface built by Nanjing SAC Power Grid Automation 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

6C:83:66

Organization

Nanjing SAC Power Grid Automation Co., Ltd.

Address

No.11 Phoenix Road Nanjing Jiangsu Provience CN 211100

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.