LLC "NTC Rotek"

Any device whose MAC address begins with C0:B3:C8 has a network interface built by LLC "NTC Rotek". This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

C0:B3:C8

Organization

LLC "NTC Rotek"

Address

Russian Federation, Moscow, Nizhnyaya Krasnoselskaya st., house 5, building 6, room 03 Moscow RU 107140

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.