Looking for Illinois area codes? View a complete list of Illinois phone area codes in an easy-to-search format. Find the right code fast with Sigma Voice.
Discover the area codes used in Indiana. Learn about regions and cities served.
Discover the area codes used in Iowa. Learn about regions and cities served.
Discover the area codes used in Kentucky. Learn about regions and cities served.
Discover the area codes used in Missouri. Learn about regions and cities served.
Discover the area codes used in Wisconsin. Learn about regions and cities served.
The North American Numbering Plan (NANP) is a telephone numbering plan for twenty-five regions in twenty countries primarily in North America, including the United States, Canada, and many Caribbean nations. Below is a comprehensive list of all area codes within the NANP regions.
For a complete list of all area codes, please visit All Area Codes.
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