Getting missed calls/calls /SMS from unknown number , we can use this app to find the location and service provider of caller.(without Internet Connection)
Get the Telecom Circle (State / Metro) and the Operator of any mobile number by just entering first 4 digit of your Mobile Number.
See the call logs with complete information like Service Provider and Location of each call received.
It doesn't tell only the telecom circle but also tells which area that telecom circle includes. see the screenshot.
Get the STD code of any city in India.
Get the ISD code of all the countries in the word.
Enter the STD code and get the city name.
Enter the ISD code and get the Country name.

App contains latest number series.
It contains the STD code of all the Cities and ISD code of All countries.

Note: The Operator shown here is the first assigned operator for MSC code. With mobile number portability in place, the number could have ported to some other operator. Numbers ported to other operator is still being shown as the first registered operator of the number.
If the user is in roaming then the apps tells the home location.
App shows location of mobiles of india only.
Note: The app does not any advertisement.

Screenshots: