MCS Logic Inc.

Any device whose MAC address begins with C4:30:18 has a network interface built by MCS Logic Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

C4:30:18

Organization

MCS Logic Inc.

Address

6F. Samho Center B Bldg., 275-6,Yangjae-Dong, Secho-Ku,Seoul Seoul KR 137-941

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.