Ashley Butterworth

Any device whose MAC address begins with 10:01:CA has a network interface built by Ashley Butterworth. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

10:01:CA

Organization

Ashley Butterworth

Address

P.O. Box 3410 Santa Clara CA US 95055

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.