There is a way you can cut out the middle man though, and the Reverse Phone Detective is one of the tools private investigators use when finding out more information about specific people, and this database can also be used by individuals as well and is a fantastic resource that is also very affordable.
The reverse phone database allows you to search using the name of the individual so that you can find out all about them, or by a telephone number if you want to find out more about the account holder. The results will provide you with a comprehensive amount of detail about the account holder/individual from their full name and address through to details of others living at their residence.
Reverse Phone Detective is a paid for database, and for a small fee you will have access to a wealth of information about individuals, and this is a much more effective resource than a free directory, as these services only provide standard 'white pages' information that can only provide you with very basic details about landline numbers