India ISP Contact Details: All 2,870 DoT-Authorised Internet Service Providers

Every internet service provider operating in India holds an authorisation from the Department of Telecommunications, and DoT lists all of them in its Sanchar Saathi “Know Your ISP” register: the national carriers (Reliance Jio, Bharti Airtel, Vodafone Idea, BSNL), the large fixed-line and enterprise providers, and roughly 2,700 regional and district operators. This directory reproduces that register as of 10 September 2026, with each provider’s email, contact number, website and licence category, and, where DoT’s licensee list publishes them, the authorised person and registered office. Address a lawful request to the authorised person or the provider’s nodal officer for law-enforcement requests.