In certain campaigns, it is possible that a 3rd party tracking platform will show clicks appearing from geos outside of those that you are targeting. This is often due to the different geo/IP databases used throughout the industry. What IP database A has identified as a US IP block could be viewed as a DE IP block by database B.
Very occasionally, due to the nature of RTB, campaigns could get clicks from untargeted geos (in our experience, this generally accounts for a few percent of total campaign clicks).
For campaigns running on Google AdX, these clicks are due to the Google compliance bots.
If you have further questions, please email firstname.lastname@example.org