NORTEL

Any device whose MAC address begins with 00:90:CF has a network interface built by NORTEL. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:90:CF

Organization

NORTEL

Address

250 SIDNEY STREET Belleville Ontario K8N 5B7 CA

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.