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A Line Information Database (LIDB) is a record kept by the local telephone service provider that consists of a number of details for each customer. The categories included in a Line Information Database include subscriber information, such as a service profile, name, address and credit card validation information.
LIDB is a database service used in the United States and Canada which is managed by a conventional landline telephone company that holds a subscriber's information such as service profile, 10-digit line number, service provider ID, equipment indicator and billing specifications. Telephone service providers maintain and retrieve these records for caller identification and line information. This information is also utilized by other service providers such as telemarketers to target specific audiences for their products. The information is passed along during call setup for regular calls between two subscribers.