using System;

using System.Collections.Generic;

using System.Net.NetworkInformation;

using System.Threading.Tasks;

public class Program

{

    static void Main(string[] args)

    {

        List<Task> tasks = new List<Task>();

        foreach (string url in new string[] { "mycsharp.de", "www.google.de", "www.wolframalpha.com" })

           tasks.Add(PingAsync(url));

        Task.WaitAll(tasks.ToArray());

    }

​

    private static async Task PingAsync(string url)

    {

       Ping ping = new Ping();

       PingReply reply = await ping.SendPingAsync(url, 1000);

       Console.WriteLine("IP: {0}\t=> time: {1}ms\t(url: {2})", reply.Address,reply.RoundtripTime, url);

    }

}