UniControls a.s.

Any device whose MAC address begins with 00:23:67 has a network interface built by UniControls a.s.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:23:67

Organization

UniControls a.s.

Address

Krenicka 2257 Prague 10 CZ 100 00

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.