Beijing TongTongYiLian Science and Technology Ltd.

Any device whose MAC address begins with FC:9D:D8 has a network interface built by Beijing TongTongYiLian Science and Technology 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:9D:D8

Organization

Beijing TongTongYiLian Science and Technology Ltd.

Address

Room 301,Zone 3,Building 9,No.8 Dongbeiwang West Road,Haidian District,Beijing BEIJING BEIJING CN 100193

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.