UNION MAN TECHNOLOGY CO.,LTD

Any device whose MAC address begins with 40:F4:FD has a network interface built by UNION MAN 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

40:F4:FD

Organization

UNION MAN TECHNOLOGY CO.,LTD

Address

No.5,Huitai Road,Huinan High-Tech Park,Huiao Highway Huizhou Guangdong CN 516025

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.