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 ipAccessControlList = twilio.CreateIpAccessControlList("My new acl"); Console.WriteLine(ipAccessControlList.Sid); }