JFCONTROL

Any device whose MAC address begins with C4:8A:5A has a network interface built by JFCONTROL. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

C4:8A:5A

Organization

JFCONTROL

Address

1449-37 Seoburo Suwon Gyunggi-do KR 16643

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.