Area codes 330 and 234 are North American telephone area codes in the United States for part of northeast Ohio. Area code 330 was established on March 9, 1996 when it split off from area code 216. It was Ohio's first new area code since the North American Numbering Plan started in 1947. Overlay area code 234, originally planned as the relief code for the Jacksonville, Florida area, was established on October 30, 2000, but phone numbers were not assigned to it until 2003. They cover the Akron, Canton, Youngstown, and Warren areas. Ten-digit dialing has been mandatory since October 1, 2000.