Bharti Airtel's subscriber base across mobile, fixed line and DTH services has crossed 300 million, with the company garnering the latest 100 million in less than two years.
The GSM service provider, which began operations in 1995, had touched 100-million customer mark in 2009 and crossed the 200 million mark in 2012, the New Delhi-based company said in a statement.
The company is ranked as the fourth-largest mobile service provider globally and second-largest globally outside of China.