Overall, an estimated 3.2 billion people (or 44 percent of the world's population) will have access to the Internet in 2016, IDC said in a statement.
    
"Growth in Internet access is taking place around the world, but some countries are seeing particularly rapid growth. China, India, and Indonesia lead the way and will account for almost half of the gains in access globally over the course of the next five years," IDC added.
    
According to Internet and Mobile Association of India (IAMAI), India was expected to reach 402 million by December 2015, registering a growth of 49 per cent over 2014. About 306 million of these are expected to access Internet from their mobile devices.
    
IDC said the global mobile Internet userbase is forecast to grow at two per cent annually through 2020 unless significant new methods of Internet access are introduced.
    
Efforts by Google, SpaceX, and Facebook among others to make the Internet available to the remaining 4 billion people via high altitude planes, balloons, and satellites are underway.
    
However, it remains unclear how successful these endeavors will be and when they will be operational at scale, IDC said.