Find any 573- phone number in Missouri

The 573 area code is a Missouri area code that serves the eastern half and south central portion of Missouri. It was formed in 1997 in a split from the 314 area code which previously served the entire state. This split was necessitated due to the rapid growth of telecommunications technology during the 1990s.

The 573 area code is part of the North American Numbering Plan (NANP) administered by the North American Numbering Plan Administration (NANPA). Every state in the United States, as well as the territories of Guam, Puerto Rico, and U.S. Virgin Islands, will have at least one area code assigned to it which should be used when calling anywhere within those regions. These area codes are essential for routing calls to the correct location and ensuring that there is adequate phone line availability both currently and in the future.