Presented herein are authentication systems and methodologies for equipment deployed in an operational electronic network. Information about a piece of network-connected equipment is received, wherein the information includes a plurality of attribute values characterizing the equipment, wherein the information is obtained via a query to the equipment that produces, as output, the plurality of attribute values. The attribute values are compared to stored values, and when one or more of the attribute values are determined to be outside a range of the stored values, the equipment is designated as non-authentic. Non-authentic equipment may include counterfeit and grey marketed equipment.