As a matter of fact there is a tool that gives out as much information as possible. http://serialcoders.sytes.net/Download/DNSLookup/index.html
to get DNS Lookup, coded by our very own SilentRage. Someone asked about subdomains (test.testing.com) and SR informed us that there is nothing in the DNS protocol to allow for discovery of subdomains. So I think you're outta luck there. But as far as getting lots of info on a site, that tool will do the trick.
[Insert by SilentRage: I was wrong earlier, you CAN find subdomains for a given domain by doing DNS Transfers. If you want help on that, create a new topic asking how.]