Hi, I wonder if anyone knows if there exists some kind of software that connects with some kind of provider that gives you back a registered address of a person that owns a specific phone number?
Address updating software
No such thing that works world-wide, but there are many directory services accessible via a browser/Internet or even phone-based applications in different countries.
Maybe you could say where in the world you are for people to be able to assist you better?
Anyway, for example, this directory service says it "offers phone numbers and addresses from, for example, Austria, Belgium, Canada, Denmark, France, Germany, Great Britain, Hungary, Italy, Netherlands, Switzerland, Czech Republic and United States": http://www.fonecta.com/mobile_solutions.php
The catch: it only works if you have a subscription of an operator in Finland.