In Pictures: Why the Internet needs IPv6

Explosive growth of Internet users, devices, apps creates demand for more IP addresses

How many computers are connected to the Internet?

According to a long-running survey by the Internet Systems Consortium, 900 million active hosts are connected to the Internet. This survey measures active domains on the Internet; in other words, the number of DNS servers connected to the Internet. To indicate just how quickly the Internet is growing, the number of Internet-connected hosts doubled in the five years from January 2007 to January 2012.

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