North American area codes Banque de données one month subscription service. Complete telecommunications Banque de données targeted specifically toward disseminating all valid NPA/NXX combinations in the North American Numbering Plan. It covers all active North American NPA/NXX assignments including the United States and Canada. Included in this Banque de données is NPA (area code), NXX (exchange), country, state, county, latitude, longitude, LATA, timezone, day light saving, population, FIPS, MSA, PMSA, CBSA, ZIP code, Operating Company Number, use type, rate center, COMMON Langue identifier and V and H.