Today in India (Not only in india ) everyone from child to older man is having mobile phones. with the rapid growth if mobile phone usage in recent years, we have often observed that the mobile has become a part of many illegal and criminal activities. So in most cases tracing a mobile number is became a vital part in the investigating process. Also sometimes we just want to trace a mobile number for reasons like prank calls and blackmails and missed calls.
Even though it is not possible to trace the caller, it is possible to trace location of the caller and can find the phone network which is using. Just have a look at the page on Tracing Indian Mobile Numbers from Wikipedia. It is sure that we can trace any number, Location(state) and Network of mobile phone of the caller. The wiki is updated regularly so as to provide up-to-date information on newly added mobile numbers.
If you would like much simper interface where you can enter just mobile phone number and you will get country,state,city and network operator information.
Then you can try this links :
By using this information you can trace where the caller is but not who the caller is and his name and information about him. So if you are in emergency and need to find actual person behind the call, i recommend that you file a complaint and take help of police.