TextToBeWritten = "<div>Pinging... </div>";

            string ipBase = "172.16.94.";
            for (int i = 1; i < 100; i++)
            {
                string ip = ipBase + i.ToString();

                Ping p = new Ping();
                var pingReply = p.Send(ip, 100);

                

                if (pingReply.Status != IPStatus.Success)
                    TextToBeWritten += "<div><div class=\"host-offline\">Offline</div>" + ip + "</div>";
                else
                {
                    //Machine is alive
                    TextToBeWritten += "<div><div class=\"host-online\">Online</div>" + ip + "</div>";

                    IPAddress hostIPAddress = IPAddress.Parse(ip);
                    TextToBeWritten += "<div>";
                    try
                    {
                        IPHostEntry hostInfo = Dns.GetHostByAddress(hostIPAddress);
                        IPAddress[] address = hostInfo.AddressList;
                        String[] alias = hostInfo.Aliases;
                        TextToBeWritten += "Host: " + hostInfo.HostName;
                    }
                    catch (Exception e)
                    {
                        TextToBeWritten += "DNS Resolution Error: " + e.Message;
                    }
                    TextToBeWritten += "</div>";


                }
            }