FONsystem co. ltd.

Any device whose MAC address begins with 44:61:9C has a network interface built by FONsystem 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

44:61:9C

Organization

FONsystem co. ltd.

Address

3F annex of Venture support center GwangJu KR 500-706

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.