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Make sure you control which countries your ads can show in. 90% of my budget for high tech equipment was getting spent in Bangladesh. Pure fraud. Once you start clamping down a LOT, results can get better.



For the US market, I'd love to see a breakdown of visitors via Google and Facebook and see what % of them use an IP that is associated with a VPN.

If the % is high, then there is a case to be made that most of the clicks are from abroad VPNing into the US.


How do I find this list of VPN IPS? I know Netflix knows it but not sure they are sharing...


Every IP address has to be registed to an ISP, VPN servers are pretty trivial to detect as you'll see that the registration info from ARIN, RIPE, APNIC, etc. comes up as "HideMyAss" or "Amazon".

There are companies out there that provide paid anonymous, reliable (not hacked) proxy servers that run on consumer internet connections though, and those would be very hard to detect as vpn / proxy connections.

Another way is through capabilities where you have a computer that identifies itself as a macOS device but has the TCP/IP stack of a windows device – that's a proxy ! I would recommend the source code of p0f or the book silence on the wire to learn more about the topic.


I would start with public proxy lists like HideMyAss. I can't imagine foreign users pay premium for VPN services like IPVanish, etc.


What % of VPN users will that get you? 10%? This seems a very hard problem to actually solve...


Try getIPIntel.net


Indeed; I limited my impressions to the USA and a handful of developed nations, as well as a handful of middle income countries I know to be good markets for my product.

Bangladesh didn't make the cut. :-)


Do you have a breakdown of % VPN IPs vs. not of your visitors?




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