CORPORATE NETWORK SYSTEMS,INC.

Any device whose MAC address begins with 00:C0:B5 has a network interface built by CORPORATE NETWORK SYSTEMS,INC.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:C0:B5

Organization

CORPORATE NETWORK SYSTEMS,INC.

Address

5711 SIX FORKS ROAD--STE #306 RALEIGH NC US 27609

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.