Open Source Robotics Foundation, Inc.

Any device whose MAC address begins with A4:F3:C1 has a network interface built by Open Source Robotics Foundation, 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

A4:F3:C1

Organization

Open Source Robotics Foundation, Inc.

Address

419 N Shoreline Blvd Mountain View CA US 94043

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.