Kakao Corp

Any device whose MAC address begins with 0C:1C:20 has a network interface built by Kakao 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

0C:1C:20

Organization

Kakao Corp

Address

242, Cheomdan-ro Jeju-si Jeju-do KR 63309

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.