IP Regex

 

public const string strIPRegex = @"^([1-9]|([1-9]/d)|(1/d/d)|(2([0-4]/d|5[0-5])))/.(([0-9]|([1-9]/d)|(1/d/d)|(2([0-4]/d|5[0-5])))/.){2}([1-9]|([1-9]/d)|(1/d/d)|(2([0-4]/d|5[0-5])))$";