Methods and systems obtain manufacturer data from a device being evaluated. The manufacturer data includes a system description, a system object identification, and a device-type description. The system description includes a serial number having a format. The system object identification includes a standards manufacturer field established by a standards organization. The methods/systems evaluate the standards manufacturer field to identify the manufacturer, and rank multiple system object identifications based on the quantity of data within each system object identification. Additionally, the methods/systems match the format of the serial number to known manufacturer serial number formats. The foregoing allows the methods/systems to determine the original equipment manufacturer (OEM) of the evaluated device based on the manufacturer appearing in the data string, the rank for each system object identification, and the manufacturer appearing in the serial number format match.