Assa

Any device whose MAC address begins with 20:85:8C has a network interface built by Assa. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

20:85:8C

Organization

Assa

Address

Gurogu Guro3dong Ace Twintower 2cha 209 Seoul KR 152-779

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.