We are just one year away from the day when the internet will run out of addresses, says a report from ARIN, a non-profit organisation responsible for managing the distribution of internet addresses in north America.
The main reason for the concern, of course, is the explosion of data on the web, thanks to mobile devices and the annual growth in user-generated content. Currently, the web largely uses IPv4 (Internet Protocol Version 4). Each IPv4 address is limited to a 32-bit number, which means there are a maximum of just over four billion unique addresses. IPv6 is the next generation Internet Protocol and uses a 128-bit address, so it supports a vastly larger number of unique
Source: Times of India Mumbai