Although cell phones are now common, pay phones do still exist. From time to time, you may receive a pay phone call from a friend, family member or colleague. Although this isn't inherently suspicious, you may find yourself wondering from precisely where he is calling you. No matter what your reason is for wanting to look up the location of a pay phone, you can do so using its phone number and any of several online directories.
Perform a "reverse lookup" on the number using a service such as anywho.com or whitepages.com. Visit either website and click "Reverse Lookup." Enter the 10-digit phone number, area code first, into the field under "Reverse Lookup" and press "Enter." Although you usually use this feature for home land lines, it is possible that you'll be able to find the exact location of a pay phone using it.
Find the state for the pay phone's number. Visit the first link listed under "Resources," click the area code of the pay phone number and scroll down to the bottom of the results page. If you click "636," for example, you'll see the number represents the state of Missouri.
Cross-reference the number's prefix to get a more specific location, usually the city. Enter your prefix into the box under the text "Enter Prefix in Box" and press "Submit." If you enter the prefix "225," having already input a "636" area code, you'll find that your pay phone is located in Valley Park, Mo.