Reverse phone is the process of looking up customer details from serially listed telephone numbers. This is opposite to the conventional phone books, which list the name of the persons or institutions in alphabetical order, and their telephone numbers are listed alongside. The name reverse directory A reverse directory comes from the way such a phone list or directory is utilized, i.e. looked up in a reverse way.

Till the time when wired landline services were the only telephone service, most of the reverse phone data was classified as slightly sensitive matter, and was accessible only to the governments and the agencies and authorities handling, providing and offering such telephone services. The reverse phone lookup was then utilized only for emergency purposes and allied situations. However, with the passage of time, and the advent of cellular phones, most of such database passed on to the private cellular telephone service providers. Hence reverse phone lookups are not confidential data anymore.

With the increase of trade and commerce volumes around the world by leaps and bound, reverse telephone lookups have become immensely helpful to manufactures and sellers to reach out to suitable and potential client bases. By looking at the attached details of a telephone number, the details about the individual or the institution for whose name that telephone number is listed can be found. This way, sellers can identify and chart out a suitable section of customers who can be approached with a product.

Such exercises have proved to be very helpful to both the manufacturers and the customers. The manufacturers or any other sellers have the option to reach out directly to the customer, and in that way the prices can be kept at minimal, as a lot of intermediate parties like the retailers, wholesalers, carry and forward agents, consignees etc. are removed from the scenario in process. Such low prices trigger increase in sales and the party selling is led to a profitable position. Similarly, for the customer or the end user, if he or she has any sue of the product, he or she is getting it for a much lesser price than what he or she will have to shell out if the same product is purchased from the store or a retailer. Hence it is a win win situation for both the manufacturer and the customer. Such a win win situation becomes possible because of the direct reach out to the customers by the manufacturers or their agents with help of a reverse phone look up.

The process of reverse phone look up is also utilized by collecting agents and debt recovery agents. People who take loans from a temporary address and later default in payment, sometimes become difficult to reach out to for the collectors, because of change in phone numbers and residences. In such a scenario, the debt collector can utilize the services of a reverse phone look up to verify if a particular name listed against a phone number is of the same defaulter, by looking at and tallying other details listed about the individual with the phone number. Hence it can be seen that reverse phone look ups provide many utilities to different categories of people and institutions.