Country Code Decoder
Area Code<=>Country/State (USA or Canada)
The Country Code Decoder pages show the international dialling codes (excluding the international dialling prefix, if any) for all countries with a telephone service.
The database also provides the time difference relative to UCT for each country.
Search facilities allow dialling codes to be found from country names, and vice-versa. Codes for United States and Canada are taken to the state or province level.