Areas of India   

Regulator: Telecom Regulatory Authority of India (TRAI)

Website of regulator: https://www.trai.gov.in

Name	Prefix	Type
Ahmedabad	9179	geo
Bangalore	9180	geo
Chandigarh	91172	geo
Chennai	9144	geo
Cochin (Kochi)	91484	geo
Delhi	9111	geo
Hyderabad	9140	geo
Kolkata	9133	geo
Mumbai	9122	geo
Pune	9120	geo