Transbit Sp. z o.o.

Any device whose MAC address begins with CC:9F:35 has a network interface built by Transbit 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

CC:9F:35

Organization

Transbit Sp. z o.o.

Address

Przyczolkowa 109A Warsaw PL 02-968

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.