R&G PLUS Sp. z o.o.

Any device whose MAC address begins with 68:15:D3 has a network interface built by R&G PLUS 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

68:15:D3

Organization

R&G PLUS Sp. z o.o.

Address

ul. Traugutta 7 Mielec PL 39-300

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.