Reverse phone lookup. Does somebody knows that it can be useful?
I think you are asking if Reverse Phone lookups are useful - of course they are!
Perhaps you missed a phone call and don't recognize the number. Use a reverse phone lookup to try to find out who called you.
There are many online resources for such searches - the most reliable are paid-for.
However, you could try typing the full phone number into Google's search box. You'll probably see the number listed in dozens of different phone directories.
If the number is attached to a business, that business (usually) will show up in the first five search results.
If the number is attached to a private household, the address most likely will not show up attached to the number. However, if that person has placed their number anywhere else on the Web, perhaps at a social networking site, then that listing will show up.
2 days ago