Other websites providing international calling info

Below is a list of links to additional websites providing international calling info. While we've picked the most popular and trusted such websites we do not guarantee that all the info they make available is accurate or up to date. The best thing to do when searching for anything on the Internet: check at least 2 different sources.

• International Telecommunication Union - various code lists, numbering plan changes and more
• NumberingPlans.com - a comprehensive resource
• NANPA - North American Numbering Plan Administration
• Telephone World - a hobby site dedicated to the telephone