Total 22 Telecom circles are present in India at present. Telecom Circles are divided into 4 groups: 'metro circles' and then 'A', 'B', and 'C' circles. The 'metro' circles cover very dense population centers in the very largest Indian cities: Delhi, Kolkata, and Mumbai. The 'A', 'B', and 'C' circles cover various geographic territories of varying population sizes. 'A' circles are the largest in terms of population coverage. 'C' circles contain the smallest population. The circles listed below are the officially recognized circles as stated by the India Department of Telecommunications. India telephone companies may or may not conform to this exact usage.
