The largest sites, ISPs, hosting companies and network equipment vendors have completed the transition to a new version of Internet protocol IPv6, which allows the network instead of a much larger number of devices. Support for IPv6 include Google, Facebook, AT & T, Microsoft, YouTube, Yahoo, NASA, Sony, and hundreds of other companies. Forced to move to IPv6 standard is associated with a lack of IP-addresses - the unique number that is assigned to each device connecting to the Internet. Unlike IPv4, the address space of the new protocol is practically inexhaustible due to longer addresses (128 bits instead of 32 for IPv4). For example, IPv6 will allow every person on Earth approximately 300 million IP-addresses. The old protocol IPv4 "holds" only four billion devices - that is, less than one for every earthling.
Large-scale testing of a new protocol in the summer of last year had several major Internet companies. Because many network infrastructure providers and hosting companies has been very well prepared, "International Day for IPv6" remained unnoticed by most users. On the transition to IPv6 announced about 3 thousand companies. At the same time they do not have close access to their resources under the old protocol. As expected, IPv4 and IPv6 will continue to work together for several years. According to the forecast of Cisco (which also moved to new addresses), by 2016 the Internet will use the 3.4 billion people, or 45% of the population, and the volume of data transmitted through the network will grow to 1.3 zettabyte (a zettabyte is equivalent to a trillion gigabytes) .
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