Is there such an app?

Is there an app that blocks phone calls are not from your region? Or the question itself is invalid and it is impossible to determine in advance a region for the number?
July 2nd 19 at 13:06
1 answer
July 2nd 19 at 13:08
I have not seen, but would enjoy.
To determine the region - it is possible, the lists should be relevant.

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