Active Control Technology Inc.

Any device whose MAC address begins with D0:58:75 has a network interface built by Active Control Technology 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

D0:58:75

Organization

Active Control Technology Inc.

Address

1800 Appleby Line Burlington Ontario CA L7L 6A1

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.