IPv6 By the Numbers

A history of the Internet protocol.
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Image courtesy American Registry for Internet Numbers (ARIN)

IPv4 was developed back in the Dark Ages of the Internet – 1978. The 32-bit address space allowed for 4 billion addresses, which seemed like a good idea at the time. In 1993, IETF forecasts showed IPv4 addresses running out sometime between 2010 and 2017, so engineers began work on IPv6, which was completed in 1999.

RELATED: Whatever happened to the IPv4 address crisis?

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