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Find the area code for any location in North America, including the United States, Canada, and some Caribbean countries. The web page shows the numerical order, territory, date, and notes for each area code, including the overlay and split history.
Learn about the history, assignment, and operation of toll-free telephone numbers in the North American Numbering Plan, which have the area code prefixes 800, 833, 844, 855, 866, 877, and 888. Find out how to call or get a toll-free number in the U.S. or Canada, and what are the special cases and restrictions.
Find out the area code for any region in New York state, including the 631 area code for Suffolk County. See the map, the year of assignment, and the overlays for each area code.
Find out the area code for Saint Paul, eastern suburbs of the Minneapolis-Saint Paul metropolitan area, and communities along the Mississippi River. The area code is 651 and it belongs to the 612 numbering plan area.
Find out the five numbering plan areas (NPAs) and their corresponding area codes for the U.S. state of Wisconsin. The web page also provides historical and geographical information about each NPA and its overlay complexes.
Area code 872 is a telephone area code in the North American Numbering Plan for Chicago in Illinois. It is an overlay code for area codes 312 and 773, and was implemented in 2009 to cope with population and cell phone growth.
Learn about the history and geography of area codes 904 and 324, which cover most of the First Coast region of Florida, including Jacksonville. Find out how they were created, when they will require ten-digit dialing, and what other area codes are nearby.
Area code 603 is the sole area code for the U.S. state of New Hampshire in the North American Numbering Plan (NANP). It covers the entire state and has been in service since 1947. See the list of central office prefixes and their locations in the table.