using System.Net.Sockets;
public static void Main()
var ipAddress = "127.0.0.1";
var address = IPAddress.Parse(ipAddress);
var bytes = address.GetAddressBytes();
if (!BitConverter.IsLittleEndian)
for (int i = 0; i < bytes.Length; i++)
Console.Write(bytes[i].ToString("X2"));
int r = BitConverter.ToInt32(bytes, 0);