The database itself is quite simple. It consists of a single table named Area Codes that contains two fields:
- Area Code is the three digit area code for the region.
- Region is a description of the region. For locations within the United States and Canada, it is the accepted two-letter postal abbreviation for the region. For other locations and non-geographic area codes (such as those reserved for toll-free calls), it contains a description of the area code's use