eSSys Co.,Ltd

Any device whose MAC address begins with 68:84:70 has a network interface built by eSSys 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

68:84:70

Organization

eSSys Co.,Ltd

Address

Daerung Post Tower 5 15F, 60-3 Seoul Geumcheon-gu KR 153-702

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.