Search in the phone directory the number of your missing calls. Use the comments to indicate the owner of the phone number.
Enter the phone number into the look-up field. Thanks to the people that already know the phone number, you can looking to find out the name, address or location.
The reverse phone number look-up work on a database of phone numbers filled from different types of people. Additional information may include comments from other users who have been called from the same phone number.
Use also Facebook and Whats Up to see the profile photo of the number.