• The latest version of the Internet Protocol, version 6 (IPv6), which provides an identification and location system for computers and other devices on networks. IPv4 represented these locations as a string of four numbers:, where each number could be between 0 and 256. IPv6 instead creates addresses out of longer digit strings represented as eight groups of four digits (0 to 65535) written in hexadecimal (base 16), with a colon between groups, for example 2001:0db8:0000:0042:0000:8a2e:0370:7334. Many more things can be represented using IPv6 (2128 or 3.4×1038) than were possible under IPv4 (232, approximately 4.3 billion addresses). IPv4 allowed only 4.3 billion devices to be connected directly to the Internet, but many times that would be required when the Internet of Things is fully implemented, for example.  1


  1. Herb Roitblat, Search 2020: The Glossary.
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