Using DNS

The static Dns class encapsulates the Domain Name Service.

Domain Name Service converts between a raw IP address, such as 66.15.12.87, and a human-friendly domain name.

The GetHostAddresses method converts from domain name to IP address (or addresses):

using System;
using System.Net;
using System.Threading;
using System.IO;
using System.Text;
class ThreadTest
{
    static void Main()
    {
        foreach (IPAddress a in Dns.GetHostAddresses("abc.com"))
            Console.WriteLine(a.ToString());
    }
}

The output:

199.181.132.250