Neither the United States or Canada has a 572 area code. The 571 area code is located in Virginia and the 573 area code is located in Missouri.
AT&T and Bell Laboratories developed area codes during the 1940s. They named the system the North American Numbering Plan and implemented it in the United States and Canada in 1947. There were 86 original area codes. States that had only one area code had numbers with zero as the middle digit. States with more than one area code had numbers with one as the middle digit. Population density was used to determine the first and third digits.