JJ Corp

Any device whose MAC address begins with F4:FC:B1 has a network interface built by JJ Corp. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

F4:FC:B1

Organization

JJ Corp

Address

88 Soha-ro Gwangmyeong-si KR 14316

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.