#!/usr/bin/perl -w
use strict;
use Net::DNS;

my $domain = shift or die "Please supply a domain to query\n";
my @ips = resolve($domain);

my $i;

for (@ips) {
  print ++$i . ": $_\n";
}

sub resolve {
    my $domain = shift;

    my $res   = Net::DNS::Resolver->new;
    my $query = $res->search($domain);
    my @results;

    if ($query) {
        foreach my $rr ($query->answer) {
            next if $rr->type ne "A";
            push @results, $rr->address . " (record type " . $rr->type
+ . ")";
        }
        return @results;
    }
    else {
        return $res->errorstring;
    }
}
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I get similar results with this as I did with your original, but perhaps you can try this and see if it makes any difference. Some sample output:

time perl resolver.pl cnn.com
1: 64.236.24.12 (record type A)
2: 64.236.24.20 (record type A)
3: 64.236.24.28 (record type A)
4: 64.236.29.120 (record type A)
5: 64.236.16.20 (record type A)
6: 64.236.16.52 (record type A)
7: 64.236.16.84 (record type A)
8: 64.236.16.116 (record type A)

real    0m0.562s
user    0m0.320s
sys     0m0.010s
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As you can see, still quite fast. I also tried it on a windoze box and it returns just as quickly.

Hope this helps somewhat,
Darren :)

McDarren, rewritten by you it works very quickly now! Like really_quickly. Thank you very much :)

I Think i have to examine my version a little more closer once i get back to home, since there must be something very much wrong with it. How else could there be this much of a speed difference.

Once again, thank you for rewriting this. Now i can move on with the actual program ;)

C:\Documents and Settings\mda>perl dns.pl
11 wallclock secs ( 0.00 usr +  0.03 sys =  0.03 CPU)1: 200.228.126.26
+ (record type A)
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use Benchmark;
my $td = new Benchmark;
my @domainIp = resolveDomainIp ('hostname');
print timestr(timediff(new Benchmark, $td));
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But a question... Why nslookup is more quickly?
I donīt known details, but supose the use of caches on windows, or more simple do identify nameserver...

When I defining my nameserver has a less time. Checking why, I see other nameserver (local connection... lost configs ?)...

#.. cut ..
my $res   = Net::DNS::Resolver->new;
   print "PRE: ", $res->nameservers, "\n";
   $res->nameservers('my.desired.ip.addr');
   print "POS: ", $res->nameservers, "\n";
#.. cut ..
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