Area code 440 is a North American telephone area code for the state of Ohio, serving parts of the Greater Cleveland area, but not the city of Cleveland or most of its inner suburbs. This area code was established August 16, 1997. Area code 440 was formed by a three-way split of Area code 216, one of the original North American Numbering Plan codes. Areas 330 and 440 were added in 1997 to keep up with the increasing number of cellular phones, as well as population factors.