Find Subdomains on an IP.

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C#

IP

LAN

Hi,

I want to list all the sub domain names listed on an IP. Using the tools available on the internet (http://www.reverseipcheck.com/index.php?id=1), I am getting correct info. But my program is returning the error given below :

SocketException caught!!!Source : SystemMessage : The requested name is valid and was found in the database, but it does not have the correct associated data being resolved for .

The code used by me is :

string IpAddressString = "64.187.125.151";

           try
           {
               IPAddress hostIPAddress = IPAddress.Parse(IpAddressString);
               IPHostEntry hostInfo = Dns.GetHostByAddress("64.187.125.151");
               // Get the IP address list that resolves to the host names contained in
               // the Alias property.
               IPAddress[] address = hostInfo.AddressList;
               // Get the alias names of the addresses in the IP address list.
               String[] alias = hostInfo.Aliases;
               Response.Clear();
               Response.Write("Host name : " + hostInfo.HostName);
               Response.Write("\nAliases :");
               for (int index = 0; index < alias.Length; index++)
               {
                   Response.Write(alias[index]);
               }
               Response.Write("\nIP address list : ");
               for (int index = 0; index < address.Length; index++)
               {
                   Response.Write(address[index]);
               }
           }
           catch (SocketException e)
           {
               Response.Write("SocketException caught!!!");
               Response.Write("Source : " + e.Source);
               Response.Write("Message : " + e.Message);
           }
           catch (FormatException e)
           {
               Response.Write("FormatException caught!!!");
               Response.Write("Source : " + e.Source);
               Response.Write("Message : " + e.Message);
           }
           catch (ArgumentNullException e)
           {
               Response.Write("ArgumentNullException caught!!!");
               Response.Write("Source : " + e.Source);
               Response.Write("Message : " + e.Message);
           }
           catch (Exception e)
           {
               Response.Write("Exception caught!!!");
               Response.Write("Source : " + e.Source);
               Response.Write("Message : " + e.Message);
           }
           Console.ReadLine();

The ip used above is "64.187.125.151", showing good results when using 'readymade' tools to find subdomains.

Any help would be appreciated. Thanks.
Anurag