Of the 432 million users, about 269 million were in the urban areas of the country, the IAMAI-IMRB report said.
It added that urban India has close to 60 per cent Internet penetration, reflecting a level of saturation. Rural India, with only 17 per cent penetration, still has a large scope of development.
"While the growth of Internet usage in India is mainly being fuelled by the rural sector, the urban user base is starting to show signs of levelling out... There are potential 750 million users still in rural India, if only they can be reached out properly," it added.
In rural India, 48 per cent (around 78 million) are daily Internet users, while about 140 million (83 per cent) are estimated to use Internet once a month.
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'Lack of awareness on benefits of Internet' emerged as the main reason for not using Internet among non-users in the country, followed by factors like lack of knowledge of computers, the report said.
Also, mobile phones are the primary devices for accessing the Internet across demographics. About 77 per cent of urban and 92 per cent of rural users consider mobile as the primary device for accessing the Internet.
E-commerce services like online ticketing or e-tailing (online shopping) are much more prevalent in urban India, while these services clearly haven't made much inroads in rural India, the report said.