If one is dialing a phone number that has this code, then this is a country code for Mali in Africa and is not an area code. Mali is in the western region of Africa. It has a total area of 478,800 square miles.
To dial telephone numbers from the United States or Canada, one has to use the international prefix 011 before the country code. This prefix is the exit code for international calls. After the prefix and country code, the Mali telephone system uses eight digits. So, an international call from the U.S. would be in the form 011-223-000-00000. Large cities in Mali have identifying starting digits, such as 207, 215 and 214. While 207 is for the city of Bamako, 215 is for Kayes.