Harley-Davidson Motor Company

Any device whose MAC address begins with D4:EC:0C has a network interface built by Harley-Davidson Motor Company. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

D4:EC:0C

Organization

Harley-Davidson Motor Company

Address

3700 W. Juneau Avenue Milwaukee Wisconsin US 53208

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.