Tsingtong Technologies Co, Ltd.

Any device whose MAC address begins with FC:3C:E9 has a network interface built by Tsingtong Technologies 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

FC:3C:E9

Organization

Tsingtong Technologies Co, Ltd.

Address

Rm A03-72, Floor B1, Building 1, No.13 Dazhongsi, Haidian District Beijing CN 100098

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.