It’s the middle of the night and you are just about to fall into a deep sleep, when your phone suddenly rings. Thinking that it could be an emergency, you reach out and answer your phone – only to not hear anybody on the other line. You check the screen and it’s the same person calling you at odd hours for the past few days. In situations like this, a reverse phone lookup service comes in handy. Through it, you would at least have an idea about who owns the unknown number registered on your mobile phone.