Bionics Corp.

Any device whose MAC address begins with A4:DA:3F has a network interface built by Bionics Corp.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

A4:DA:3F

Organization

Bionics Corp.

Address

1406 Masters Tower Seoul KR 121-748

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.