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        if ($block->match($row[$i])){
            print "IP address: $row[$i] is inside $block\n";
...
        else{
            print "IP address: $row is not inside $block\n";
        }

        print "IP address: $row[$i] is ";
        if ($block->match($row[$i])){
...
            print "outside";
        }
        print " $block\n";