Hi,
I am David Kotriksnov (SH4V). I have developed a tool for collecting information of DNS servers and domain names. Its name is Mantis. Among its functions we can see:

Code:
[-0] Makes a DNS query simple query.
mantis.rb -0 mx domain.net
[-1] Starts a zone transfer(s) (axfr) to all DNS servers associated with the domain name.
mantis.rb -1 domain.net
[-2] Starts an incremental zone transfer(s) (ixfr) to all DNS servers associated with the domain name.
mantis.rb -2 domain.net
[-3] Makes a crawl of subdomains in the domain name given. It includes a dictionary but you can also use your own.
mantis.rb -3 domain.net
mantis.rb -3 domain.net dic.txt
[-4] Makes a reverse domain scan with an IP address interval given.
mantis.rb -4 192.168.1.0
mantis.rb -4 192.168.1.231
mantis.rb -4 192.168.1.1 192.168.1.164
[-5] Resolves domains name in the same server (Vhosts).
mantis.rb -5 domain.net
mantis.rb -5 192.168.114
[--all] Make a torbelline of querys.
--all domain.net
[--mantis] Make a Mantis Attack.
mantis.rb --mantis 192.168.1.0
mantis.rb --mantis 192.168.1.231
mantis.rb --mantis 192.168.1.1 192.168.1.164
I have prepared a video showing how to use it though it's in Spanish. Along the video you can see what Mantis can do.
The code is here:
http://n3t-datagrams.net/lab/mantis2.rb.txt
Edit: I have added subtitles. If you want to see the video in English language, visit the original link http://www.youtube.com/watch?v=bsofmud2o7A and:

Hope you like it!