During normal browsing with this extension installed, no data is sent anywhere. Location lookups are done via an internal IP address location database (IPDB) kept accurate by routine extension updates. Lookups for each page location are done via a single hit to the DNS cache and the Flagfox internal database. If you are behind a proxy without local DNS access and you have your application properly set to not allow local DNS requests, Flagfox will alert you and disable its features that rely on it.
The default action when clicking on the flag icon is our service called Geotool. It provides more detailed location information and additional webserver information. When accessing Geotool, Flagfox sends the current server's host name and IP address in the URL to be used as the basis to look up this additional information. Geotool is also sent version information for your current Flagfox install using a cookie. This information cannot be used to track anyone, as all people using the same version of Flagfox will use the same cookie to identify their same Flagfox version. Geotool uses this version information to grant full access to Flagfox users and restrict usage by potential external abusers of the Geotool service. This information is only sent when using Geotool through Flagfox.
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