Is there a way to do a DNS Lookup to get the DNS name given an ipaddress pragmatically, using the default dns server configured on the IIS server?

I don't want to enable server level DNS lookup at this time. I think this would consume unnecessary time and resources since, I have to do the reverse dns for only a few ip's based on some condition in the c# code.

Windows Server 2003 IIS 6
.NET 2.0
C#

Anyone?

For anyone who is interested

                try
		{
		LblHostName.Text = "";
		IPAddress myIP = IPAddress.Parse(TxtInput.Text);

		IPHostEntry GetIPHost = Dns.GetHostByAddress(myIP);
		
		LblHostName.Text = "Host Name is: " + GetIPHost.HostName;	
		
		}
		catch(Exception ex)
		{
			LblHostName.Text = "<font color=red>Error:" + ex.Message;
		}

Source: http://www.aspalliance.com/cookbook/ViewChapter.aspx?Chapter=21