namespace Org.BouncyCastle.Utilities.Net { public class IPAddress { public static bool IsValid(string address); public static bool IsValidWithNetMask(string address); public static bool IsValidIPv4(string address); public static bool IsValidIPv4WithNetmask(string address); public static bool IsValidIPv6(string address); public static bool IsValidIPv6WithNetmask(string address); public IPAddress(); } }