Number Cloak is a completely free service enabling you to instantly hide your mobile or landline number, by providing you with a secondary    number (starting with 070) known as a Number Cloak. When your Number Cloak is called it is automatically diverted to your real number without the caller being aware. You are able to receive up to 10 Number Cloaks per e-mail address. If you want to change your Number Cloak, simply disconnect (using the Un-Cloak Me feature) and set up a new one.