Linepro Sp. z o.o.

Any device whose MAC address begins with 4C:54:27 has a network interface built by Linepro Sp. z 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

4C:54:27

Organization

Linepro Sp. z o.o.

Address

ul. Miedziana 11 Warszawa mazowieckie PL 00-835

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.