It provides name, address, country of the caller. TrueCaller gives you details of a given phone number.

TrueCaller will wade through the database and show you all the details that it will find for the given phone number.If, by chance, the code is wrong, you can select the country code from the drop-down list. Enter the phone number for which you want to find the caller details.Website will automatically detect your country and country code.The website will give you the following options to do login: This database of mobile phone numbers is freely searchable by anyone through TrueCaller app or through TrueCaller website. So, TrueCaller works on the lines “if your phonebook does not have a number -someone else’s phonebook may have it!” As a result, the database becomes really fat. In the same fashion, the app collects information from millions of users. If you install TrueCaller app on your mobile phone, the app will pick up contact details from your phonebook and integrate the details in a global database managed by the service.

You can consider it as a huge telephone directory. It is arguably the largest of such communities. TrueCaller essentially relies on the massive community of mobile phone users. How to Find Details of Unknown Numbers using TrueCaller In this article, I will talk about the features of TrueCaller service, but let’s first understand how this service works. TrueCaller mobile app and website are probably the quickest and best way to determine the ownership of such unknown phone numbers. Faced with such anti-social elements, people often wish if they could find the details of phone number that is being used by the offender. Trust me, this is extremely useful if someone is trying to harass you by making unsolicited, unwanted and/or blank calls. So, you can imagine how popular this app is in India. Recently, Kari Krishnamurthy, Truecaller’s vice-president of growth & partnerships in Asia, Middle East & Africa, said that “over half of our 70 million users are in India, and we are adding 110,000 users a day here”. Are You Getting Calls from International Unknown Numbers?

Truecaller app faq