OnTime Networks AS

Any device whose MAC address begins with CC:54:59 has a network interface built by OnTime Networks AS. 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:54:59

Organization

OnTime Networks AS

Address

Gladsvei 20 Oslo NO 0489

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.