If you want to know the location or area of any mobile number from where it is operating, you can check it here. It is also useful when you get a miscall of unknown people and want to know from where the caller belongs.
This information is available only for India and Pakistan. Initial four digit of mobile number is sufficient to give information about location, Operation service provider and technology used for that mobile number.
Now, many mobile subscribers in India and Pakistan are getting unwanted calls from advertiseing agencies in the form of recorded voice ads. So before resoponsing the missed call, better to know about caller’s location.