Dairy Cheq Inc

Any device whose MAC address begins with 58:D6:D3 has a network interface built by Dairy Cheq 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

58:D6:D3

Organization

Dairy Cheq Inc

Address

60 Baffin Place, Unit 5 Waterloo Ontario CA N2V 1Z7

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.