Concept2, Inc.

Any device whose MAC address begins with 6C:DF:D9 has a network interface built by Concept2, 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

6C:DF:D9

Organization

Concept2, Inc.

Address

105 Industrial Park Drive Morrisville VT US 05661

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.