To perform a reverse lookup, select the Lookup Number option after tapping the dots that appear next to the number. Since it's not possible to look up a number directly through the Mr. Number website, download the Mr. Number app from Google Play and use it from a smartphone.
After you select a number, Mr. Number performs an analysis of its database to identify whether other users have reported the selected number in the past and whether there’s a name attached to it. Mr. Number doesn’t charge for its services if the search process yields no results. To perform a lookup on numbers that you haven’t received calls from, access the Inbox in the Mr. Number app, and tap the search icon. Once the new screen appears, enter the desired number, and tap the Look Up button.
The Mr. Number website lets users report numbers that are sources of spam and harassment. Additionally it lets them review the comments that other users left regarding specific numbers. A user can identify himself on the service and change the way he appears in Mr. Number Caller ID by entering his phone number and clicking on the Text Me or Call Me option. Once identified, he can report numbers and leave feedback for others users to review.