North American Telephone Area Code and Prefix Location Database, Premium Edition. This data includes every active telephone NPA/NXX area code and exchange combination in use for the United States, Canada and most of the Caribbean.Our most economical geo-coded telephone database. Contains the primary Zip or postal code generally associated with the exchange location. For Canadian postal codes, the FSA portion is significant and the LDU portion specifies the first LDU associated with the general location, central office or wire center.

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