Systems and methods for utilizing customer data in a communication system are provided. In exemplary embodiments, customer records at a customer data warehousing system are accessed. Customer data from the customer records are extracted and associated with a customer identifier. The customer data is then stored to an indexed database, the extracted customer data being indexed according to the identifier. When an incoming communication is received, the communication system will determine a communication identifier of the incoming communication. A lookup and matching process is then performed using the communication identifier in the indexed customer information database. If a matching customer identifier is found, associated customer data may be retrieved and used to provide enhanced communication system services including communication routing and customer data alerts.