This is a web based DNS scanner written in Perl using Sockets.
It does a reverse DNS on a entire IP subnet with the option to
check for web servers and return the software name/version.
The Perl source code for this program is available in
dnsscan.zip.
$ENV{'REMOTE_HOST'}$ - $ENV{'REMOTE_ADDR'}$
Do not scan a network without permission. All scans are logged.
For more Perl programs and source code go to http://www.edis.org/perl/.