MCNEX Co.,Ltd.

Any device whose MAC address begins with EC:3C:88 has a network interface built by MCNEX 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

EC:3C:88

Organization

MCNEX Co.,Ltd.

Address

Hanshin IT Tower2 11F, Digital lo 9 gil Geumcheon-Gu Seoul KR 153-712

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.