SmartRG, Inc.

Any device whose MAC address begins with 3C:90:66 has a network interface built by SmartRG, 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

3C:90:66

Organization

SmartRG, Inc.

Address

501 SE Columbia Shores Blvd Vancouver WA US 98661

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.