It's happened again. Your cell phone rings, you pick it up and there's some jokester on the other end making funny noises and saying inappropriate things. You get irritated and yell at them to stop calling you, but, alas, they hang up and all you're left with is a feeling of frustration.

Who is this person?

Is it someone you know or a stranger that's harassing you?

Finding out someone's name with phone number isn't as easy as it used to be, since so many people are using cell phones now. Their identity is hidden from public view, which means that you won't be able to stop these calls until you can find out who's behind them.

While anybody with a landline phone is listed in the public phone directory, cell phones are treated as private information, and therefore, it's nearly impossible to look through any public directory to identify phone number of someone you don't know, or someone you know, but don't know their cell number.

Fortunately, there is a fast way for you to look up unlisted phone numbers online. It's called a reverse phone directory. Just punch in the number and you'll be able to see all that private information that was once hidden.

While there are many so-called "free" lookup directories, you should be aware they there really is no such thing when it comes to cell phones. Because this information is private, all directory services must pay to find out this information, therefore, they will pass along some of this cost to you.

So, if you really wanna know who this mystery person is, the best way to find out is to make a small, one-time investment for your own peace of mind.

Of course, there are other reasons why you may need to use a reverse phone directory. Like say, to find a relative or old friend. In these cases, the information could lead to a very treasured reunion.

If the caller is bothering you, put a stop to it by finding out who it is and turning the tables on them.