IP address ranges for countries

I am sure this has been asked before but I might be using the wrong search terms and don't find it.

One of my servers has attracted hacking attempts from a certain asian country. BFD is blocking the hacking attempts successfully so far. But I do not like to take any risk.

As I do not serve those global areas with my stuff anyway - I'd like to block the whole IP addresses for these countries. Is there a list with IP address ranges for countries/global areas that I can use to block access from certain countries?

Thanks.

Christoph

 

 

 

 

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