IP Name scan

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# 1  
Old 07-16-2001
IP Name scan


how to search a range of IP:s for their registed IP names?
Like nslookup or host for all IPs 130.xxx.xxx.1 to 130.xxx.xxx.254

# 2  
Old 07-17-2001
Lightbulb dnswalk

There is a DNS scanning utility that is often used by hackers or security folks that do a dnswalk or similar scan. Try this and let us know if it works for you!


# 3  
Old 07-18-2001

well all DNS components for perl was not installed so it didnt work with dnswalk. however I asked a workingmate and he wrote a script in a few minutes...

use Socket;

# While sdtin
while(<>) {
	if($_ =~ /(\d+\.\d+\.\d+\.)(\d+)\s+(\d+)/) {
		for($2..$3) {
			$iaddr = inet_aton( "$1$_" );
			print "$1$_ = ".(gethostbyaddr($iaddr, AF_INET) or "hostname not found")."\n";
	} elsif($_ =~ /(\d+\.\d+\.\d+\.\d+)/ ) { 
		$iaddr = inet_aton( $1 );
		print "$1 = ".(gethostbyaddr($iaddr, AF_INET) or "hostname not found")."\n";
	} else {
		print "Invalid ip\n";


inserted code tags for readability --oombera

Last edited by oombera; 02-16-2004 at 04:26 PM..
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