Telefon-Gradnja d.o.o.

Any device whose MAC address begins with 00:14:45 has a network interface built by Telefon-Gradnja d.o.o.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:14:45

Organization

Telefon-Gradnja d.o.o.

Address

Plesivicka 3 Sveta Nedelja Zupanija Zagrebacka HR 10431

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.