PRAVIS SYSTEMS Co.Ltd.,

Any device whose MAC address begins with 3C:04:BF has a network interface built by PRAVIS SYSTEMS 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

3C:04:BF

Organization

PRAVIS SYSTEMS Co.Ltd.,

Address

4F, 5F Jaeyoon Bld, 75-3 Yangjae-Dong, Seoul Seocho-Gu KR 137-889

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.