One problem is with

%file2 = 'Source.txt' ;      # Name the file with source addresses
open(INFO, "<%file2" ) ;     # Open the file
[download]

The `%file' indicates a hash, not what you want here. Change it to

$file2 = 'Source.txt' ;      # Name the file with source addresses
open(INFO, "<$file2" ) ;     # Open the file
[download]

To extract the countries, you need to see if the IP address in $line1 is contained in $line2:

open APPEND, ">>conversion.txt";
foreach $line1 (@lines1) {
   foreach $line2 (@lines2) {
      print APPEND $line2
         if $line2 =~ /$line1/;
   }
}
close APPEND;
[download]

That code is still just a start. In addition you will want to check whether the open statements succeed and you will want to use perl -w to turn on warnings that can catch typos like %file above.

-Mark

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