FN-LINK TECHNOLOGY Ltd.

Any device whose MAC address begins with 40:F4:C9 has a network interface built by FN-LINK 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

40:F4:C9

Organization

FN-LINK TECHNOLOGY Ltd.

Address

No.8, Litong Road, Liuyang Economic & Technical Development Zone, Changsha, Hunan,China Changsha Hunan CN 410329

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.