Address search by phone number is possible on people search websites which are plentiful on the internet. The web sites are equipped with search tools that will efficiently and easily help the searcher locate people by mere entering of data as simple as a phone number - land based or cellular phone. They also call it reverse phone directory or reverse phone look up. There are plenty of these services on the internet. Some websites can even access unlisted phone numbers and disconnected phone numbers and lead them to a name and an address.

Reverse phone directories or reverse phone look up have access to the most current public records containing information about people and businesses. Address search by phone number services are offered for free and some for a minimal fee. For basic information such as name and address, these are offered for free. For more comprehensive background information, like birthdates, dates of death, family histories and even criminal records, the services require a minimal cost.

Searching for people's location is easy through address search by phone number. Websites often have user-friendly interface that will guide the user as to how to encode the available data or the phone number to get the address. Connection with long lost relatives and friends are re-established through as basic information as a phone number, be it an old number or new, land based or cellular phone.

It will immediately be connected to the name and address. The people search services can access various databases which can track address histories by phone numbers alone. So even if the person being searched has moved to another location, the phone number can still be used to find the new address. The databases keep records of previous addresses which are still linked with phone numbers.

Aside from individual personal searches, address search by phone number is also being done by big companies in relation to record keeping of information regarding their employees and applicants. They also use this method to not only to update their files on their current customers but to expand their customer base as well. This is one of the marketing strategies of big companies in bringing their products or news and developments of their products to their customers fast. For customers, this is an added value to the service they receive from these companies.

The usual clients of people search websites who often do address search by phone number include lawyers, private investigators government agencies, insurance agencies and, of course, private citizens. Private citizens mostly want to find relatives and friends. But they also do other searches if they want to investigate a new acquaintance for security and safety purposes.

Address search by phone number is only one of the ways to search for people or to dig up information about them. Searchers may use names, nicknames or aliases, or names of relatives in the search tools of people search websites. And searches can be as in-depth as digging information about identity, reputation and even whereabouts. Functioning like a detective, these people search services in the internet are also called internet detectives.