There is no telephone service that offers unlimited calling to any telephone anywhere in the world, as of 2015. However, Lingo, Cablevision, T-Mobile, and Vonage offer unlimited calling across the United States and to select countries.
Lingo's World Ultimate plan gives customers unlimited calls to landlines in over 90 countries and mobile calls to 50 countries. T-Mobile gives its customers an option to add Stateside International Talk to a plan, which allows unlimited calling to landlines in over 70 countries. Cablevision's Optimum Voice gives customers unlimited calling to anywhere in the United States, Canada, Puerto Rico and the U.S. Virgin Islands. Vonage's World plan offers unlimited calling to landlines in 60 countries.