Thanks for those, I has a few similar sources, but those are another two
There is no reason why you can't use those to generate your own zone files. As it is you only really need to keep the zone files up to date for countries you DONT want to filter out... Even then it's only for registration. So worst case some people need to be manually allowed through later.
Blocking at the .htaccess level means that no one from those locations can get any access, I don't see that as a viable solution.