DU Caller!

Find a person by a name or phone number worldwide for free using Truecaller. Also available on Android, iPhone, Nokia Symbian and Blackberry.

WhosCall is a reverse Number Search, with a global number database of over 600 million entries.

We've all been there. You've missed a call on your phone from an unknown number. You wonder if you should call back, it could be important. Or maybe it's yet another telemarketer ringing to sell you insurance. That's why we created CallerSmart. CallerSmart is an innovative free app for your iPhone that helps you identify mystery numbers and block unwanted callers. How? By bringing you an up-to-date user-generated phone book that's supported by an ever-growing community of passionate users. Thanks to a revolutionary game system which rewards you for your contributions to our phone book, together we're now able to outsmart unknown & unwanted callers. As our users add information to more and more numbers, our database continuous to expand- CallerSmart can only get better! »

This application will help to determine telephone numbers, both mobile and fixed telecom operators around the world by using codes.Guide consists of two modules:- Identification “Who called?” Just enter your phone number and you will receive information by the following numbers of telephone subscriber: country, state, region, area, city, town.- The instruction ""How to call?"" It helps to find and display the plan of numbers as handy reference of codes for countries, cities and mobile operators worldwide.Please note, this application can’t tell you who's calling, but it can help to find by telling where the call is from, providing that the number of subscriber is fixed and attached geographically or to the network provider.Database is constantly updated and corrected, as it is located on a remote server.The program requires an Internet connection. The application is free. »

“Call Notes Is a Cheat Sheet While You’re on the Phone.” Gizmodo

Truecaller Name Retriever. The simplest method for accessing truecaller's database is through CallerPy's online service.