Built in 2006 and, for years now, maintained by the same small team of telecom enthusiasts, is supposed to be a handy area code guide to countries using the North American Numbering Plan.

We use several sources for the information we publish, including the North American Numbering Plan official website. New overlay codes and other changes in the numbering plan are announced in our area code news section.

How to use this website

Each area code has a page of its own where we provide a comprehensive list of places served, overlay area codes, time zone information and so on. Major cities of over 50,000 people are highlighted in bold text.

You can locate a phone number by using the NPANXX dropdown containing all assigned central office codes for any one NPA.

You can also search for area code(s) covering a certain city/town or US state/Canadian province.

The Reverse phone lookup tool takes you to our sponsor's website where, for a fee, you may find details about one or more phone numbers in the US.

Our goal is for you to spend as little of your time as possible looking for information on this website. For any questions or suggestions don't hesitate to contact us.


The accuracy of the information we publish is our main concern. However, given the complexity and size of a numbering system such as the North American Numbering Plan, we do not guarantee that all the information provided on this website is correct. Please use at least one extra source when you are about to make important decisions based on this information.