title: External DNS lookup web service (NSLOOKUP / DiG)
body: <p>Several sites offer hostname to IP conversions, or in their wording:</p>
  
  <blockquote>
    <p>Query a DNS domain nameserver to
    lookup and find IP address information
    of computers in the internet. Convert
    a host or domain name into an IP
    address.</p>
  </blockquote>
  
  <p>However, I haven't been able to find any free webservices offering this functionality.
  I've stumbled upon this <a href="http://www.vb.net.cn/sNsLookup.asmx?op=DnsTable" rel="nofollow">Chinese webservice</a> but it doesn't seem to do what I want.</p>
  
  <p>Anyone know of a free one ?</p>
  
  <p><strong>Clarification</strong> of exactly what I want to be able to do:
  I want an free, <em>external</em> web service (on a computer different than mine, somewhere in the internet) providing a simple <em>nslookup</em> method with a signature such as:</p>
  
  <pre><code>IPAddress[] GetIpAddress(string hostName)
  </code></pre>
  
  <p>Where the result is equivalent to what I would get here:
   <a href="http://www.kloth.net/services/nslookup.php" rel="nofollow">http://www.kloth.net/services/nslookup.php</a></p>