Hello David tatzl
The question is what do you mean by "encrypt"? And what you want this "function" for. The answer is basically no unless you have your own AS.
What you mean is "can I hide the IP when I surf".
This is possible if you enter a proxy server from DE or somewhere else in your PC/browser for surfing.
e.g. from here
http://www.proxy-listen.de/Proxy...
But the question is what you want to achieve with it.
PS: This has nothing to do with the FBF or the provider.
Roger