With the help of the internet, it is good news to know that you can get vital information about a person using his/her phone number even when they are not listed in phone directories.
Let's have a clear understanding of what listed and unlisted numbers are before proceeding.
Listed numbers are those numbers that are listed in phone directories.
These are numbers that have the contact information of the owners attached to it.
In other words there have been listed the same way companies of a particular state have been listed in yellow page of that state.
And a good example of these numbers are landlines that are managed by a telecommunication companies while unlisted numbers are those numbers that are not listed in phone directories.
Sometimes the cause of not listing these numbers is seen from the law of privacy pose by the government.
Good examples of these kinds of numbers are cellular lines.
Therefore, with a clear understanding of what listed and unlisted numbers are, it will be quite easy for you to make a lookup of any number provided you can differentiate landlines and cellular lines.
One good way of knowing the exact phone number you are having is to check if the number has the code attached to it.
Some numbers appear to have their code with them while others don't.
If it does not have the code, it will be a trial and error since you are doing a free reverse phone number lookup but if it does then I congratulate you to the next step.
At the beginning of this article you read with the help of the internet, you don't need to visit directories offline to make your search, you are doing it straight from the comfort of your sitting room.
All you need to do is to open a search engine from site like yahoo or Google and type in the phone number to see what comes up.
This is the free and most commonly used method of unlisted reverse phone number lookup due to the fact that the internet is a very wide place that accommodates information.