your recommeded solution worked also for subnet level increases. thank you. making the change now.

10.0.1.252
10.0.1.253
10.0.1.254
10.0.1.255
10.0.2.0
10.0.2.1
10.0.2.2
10.0.2.3
10.0.2.4
10.0.2.5
[download]

script:

sub ip_fr_dotted { unpack 'N', pack 'C4', split /\./, $_[0] }
sub ip_to_dotted { join '.', unpack 'C4', pack 'N', $_[0] }

my $start = ip_fr_dotted('10.0.0.200');
my $end   = ip_fr_dotted('10.0.2.23');

for (my $ip=$start; $ip<=$end; $ip++) {
   print(ip_to_dotted($ip), "\n");
}
[download]