This may be more than what you need, but if you use a hash, you can get just the IPs within a specific range:

use strict;
use warnings;

use Data::Dumper;
use 5.010;
use Socket 'inet_aton';

my %ips;
my @ranges = qw(
  192.168.1.10-192.168.1.20
  192.168.1.30-192.168.1.40
);

for my $range ( @ranges ) {
    my ( $start, $end ) = split /-/, $range;
    my $range = "$start - $end";
    
    @{ $ips{$range} } = map { sprintf "%vi", pack "N", $_ } unpack("N"
+,inet_aton($start))
    .. unpack("N",inet_aton($end));
}

print Dumper \%ips;

for my $range (keys %ips){
    print "Range: $range\n";
    print "\t$_\n" for @{ $ips{$range} };
}
[download]

Output:

# dumper output

$VAR1 = {
          '192.168.1.30 - 192.168.1.40' => [
                                             '192.168.1.30',
                                             '192.168.1.31',
                                             '192.168.1.32',
                                             '192.168.1.33',
                                             '192.168.1.34',
                                             '192.168.1.35',
                                             '192.168.1.36',
                                             '192.168.1.37',
                                             '192.168.1.38',
                                             '192.168.1.39',
                                             '192.168.1.40'
                                           ],
          '192.168.1.10 - 192.168.1.20' => [
                                             '192.168.1.10',
                                             '192.168.1.11',
                                             '192.168.1.12',
                                             '192.168.1.13',
                                             '192.168.1.14',
                                             '192.168.1.15',
                                             '192.168.1.16',
                                             '192.168.1.17',
                                             '192.168.1.18',
                                             '192.168.1.19',
                                             '192.168.1.20'
                                           ]
        };

# for loop output

Range: 192.168.1.30 - 192.168.1.40
    192.168.1.30
    192.168.1.31
    192.168.1.32
    192.168.1.33
    192.168.1.34
    192.168.1.35
    192.168.1.36
    192.168.1.37
    192.168.1.38
    192.168.1.39
    192.168.1.40
Range: 192.168.1.10 - 192.168.1.20
    192.168.1.10
    192.168.1.11
    192.168.1.12
    192.168.1.13
    192.168.1.14
    192.168.1.15
    192.168.1.16
    192.168.1.17
    192.168.1.18
    192.168.1.19
    192.168.1.20
[download]