The milestone includes customers across mobile, fixed line and DSL, and DTH services.
Bharti Airtel, which began operations in 1995, reached the 100 million customers mark in 2009 and crossed the 200 million mark in 2012.
The latest 100 million customers have joined the Airtel family in less than two years.
The company ranks as the fourth largest mobile service provider globally and second largest globally outside of China.
Christian de Faria, Airtel Africa CEO said: “This milestone underlines the strength of our operations, which is one of the largest on a global scale. It is also a tribute to the ‘Airtel’ brand which is trusted by customers in 20 countries. Today, telecom is at the cusp of transformation, which, going forward will be driven as much by the force of technology as by the changing demographics in emerging markets across Asia and Africa. Accelerated data consumption by the youth is going to be the underlying story. I am confident that Airtel will continue to be at the forefront of this future growth story and continue to delight customers by adding value to their lives.”
In Africa, Bharti Airtel is the largest mobile operator in the Continent in terms of geographical footprint, which spans 17 countries with over 70 million customers.
Airtel’s mobile networks cover over 1.85 billion people across its operations in 20 countries and carry over 311 billion minutes of calls every quarter.