KCE

Any device whose MAC address begins with 74:F7:37 has a network interface built by KCE. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

74:F7:37

Organization

KCE

Address

5F KCE B/D,34,Annam-ro 369beon-gil,Bupyoung-gu Incheon KR 21312

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.