static void Main(string[] args)
    {
        // Find your Account Sid and Auth Token at twilio.com/user/account
        string AccountSid = "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
        string AuthToken = "your_auth_token";
        var twilio = new TwilioRestClient(AccountSid, AuthToken);

        var ipAddress = twilio.CreateIpAddress("AL32a3c49700934481addd5ce1659f04d2", "My office IP Address", "55.102.123.124");

        Console.WriteLine(ipAddress.Sid);
    }