gistfile1.rb

require 'rubygems'
# sudo gem install whois # http://www.ruby-whois.org/
require 'whois'

# From your named configuration files:
# egrep -r zone * | cut -d ' ' -f 2 | cut -d '"' -f 2 | sort | uniq > domains.txt

File.open("domains.txt", "r") do |infile|
    while (line = infile.gets)
      puts "Domain: #{line}"
      begin
        a = Whois.whois("#{line}")
      rescue
        puts "Timeout."
      end
      
      # Some whois servers don't support nameserver query.
      # most notably .ca domains.
      begin
        a.nameservers.each do |nameserver|
          puts nameserver
        end
      rescue
        whois_data = `/usr/bin/whois #{line}`
        puts whois_data
      end
      puts ""
      # Sleep lots otherwise people start to block us.
      sleep 5
    end
end