ESSYS

Any device whose MAC address begins with EC:AB:3E has a network interface built by ESSYS. 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:AB:3E

Organization

ESSYS

Address

gaetbeol-ro Incheon KR 21999

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.