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How to Dial Other Countries in the North American Numbering Plan
To make an international telephone call to any country that's part of the North American Numbering Plan (NANP), please follow the dialing procedure shown below.
NANP is an integrated telephone numbering scheme that has been adopted by 19 countries in North America and the Caribbean. All countries who participate in NANP utilize the same telephone numbering formats.
Click for further information below:
Phone Number Formats to Call Any NANP Country
Countries that participate in the North American Numbering Plan use a highly standardized 11-digit telephone phone format.
Key features of the NANP numbering plan are:
Because all NANP countries use the same country code, the NANP numbering scheme differentiates specific locations - whether a country like Jamaica, or a city like Los Angeles, by using distinct area codes.
To make an international phone call to a NANP country, you need to dial a phone number formatted as follows:
NANP Landline Phone Numbers
NANP Mobile Phone Numbers
If the NANP phone number you have does not contain the full 10-digit phone number (not including country code), then you'll need to double check to find the correct number.
Dialing Steps to Call a NANP Country
To call a NANP landline or mobile phone number from any country in the world, follow this dialing procedure.
1. Dial your int'l access code / IDD: ddd
Some mobile operators may not require dialing an IDD and/or may allow use of substitute characters (such as '+').
2. Dial NANP country code: + 1
All NANP countries utilize the same country code. If your NANP destination phone number starts with a ' 1 ' - e.g., 1 303 454 8180, then this serves as the country code. Don't dial ' 1 ' twice.
3. Dial a 10-digit NANP phone number
To reach a NANP landline number or a NANP mobile phone, dial a 10-digit number as follows:
a. Dial a 3-digit area code: aaa
b. Dial a 7-digit local subscriber number: nnn nnnn
Countries in the NANP
There are 19 countries that have adopted the North American Numbering Plan. These include the United States (and it's territories), United States, and many Caribbean nations.
Here's a complete list:
NANP also includes all US territories, such as:
US Territories in NANP
For more information on NANP, please visit the NANP official website.
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