A very powerful fingerprinting tool is the DNS resolution. With this, the sites force your browser to expose the DNS server your machine uses. If the DNS Server’s country differs from the country of your IP that can be suspicious for sites. Actually, it is not a DNS leak because your real DNS server is not exposed. This can happen if your Proxy's DNS server is in another country other than your Proxy. We suggest you to find Proxies where Proxy's DNS server locations are matching the Proxy's location.
With Kameleo built-in proxy management you can prevent DNS leaking. If you are using a proxy, the DNS requests will also be handled by your proxy.
Check out our video about the DNS resolution settings.