Nortel Networks

Any device whose MAC address begins with 00:1F:DA has a network interface built by Nortel Networks. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:1F:DA

Organization

Nortel Networks

Address

2221 Lakeside Blvd Richardson TX US 75081

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.