GMX INC/GIMIX

Any device whose MAC address begins with 00:80:DD has a network interface built by GMX INC/GIMIX. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:80:DD

Organization

GMX INC/GIMIX

Address

3223 ARNOLD LANE NORTHBROOK IL US 60062-2406

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.