We have taken utmost care to include every valid STD codes of Indian cities. Challapalli STD code is provided over here. All the talukas, villages and panchayats that come under Challapalli are also included in the list. Some of the STD code numbers consist of more than 3 digits. Here, a code of four or more digits, other than those comprising a subscriber's local telephone number determines the routing of a call.
India has a huge telecommunication network. We have included Challapalli STD code number in our STD code directory. If you find any errors or wish to share your feedback kindly report them to firstname.lastname@example.org.