NIOBRARA R & D CORPORATION

Any device whose MAC address begins with 00:20:BD has a network interface built by NIOBRARA R & D CORPORATION. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:20:BD

Organization

NIOBRARA R & D CORPORATION

Address

PO BOX 3418 JOPLIN MO US 64803-3418

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.