Extreme Engineering Solutions

Any device whose MAC address begins with 00:17:3C has a network interface built by Extreme Engineering Solutions. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:17:3C

Organization

Extreme Engineering Solutions

Address

7878 Big Sky Drive Madison WI US 53719

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.