using System; using System.Collections.Generic; using System.Text; using System.Net; //DnsLookup class Program { static void Main(string[] args) { IPHostEntry ipHostEntry = Dns.GetHostEntry("www.google.com"); Console.WriteLine("Host: {0}", ipHostEntry.HostName); if (ipHostEntry.Aliases.Length > 0) { Console.WriteLine(" Aliases:"); foreach (string alias in ipHostEntry.Aliases) { Console.WriteLine(alias); } } Console.WriteLine(" Address(es):"); foreach (IPAddress address in ipHostEntry.AddressList) { Console.WriteLine("Address: {0}", address.ToString()); } } }