Latest Crawler Quantcast user agents:

User Agent PlatformDevice
Quantcastbot/2.0 (+http://www.quantcast.com/bot) UnknownUnknown
Quantcastbot/2.0 ( http://www.quantcast.com/bot) UnknownUnknown
Quantcastbot/1.0 (+http://www.quantcast.com/bot) UnknownUnknown