NET-SOURCE, INC.

Any device whose MAC address begins with 00:40:CE has a network interface built by NET-SOURCE, 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

00:40:CE

Organization

NET-SOURCE, INC.

Address

1265 EL CAMINO REAL SANTA CLARA CA US 95050

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.