ARPANET formally shuts down. In twenty years, ‘the net’ has grown from 4 to over 300,000 hosts. Countries connecting in 1990 include Argentina, Austria, Belgium, Brazil, Chile, Greece, India, Ireland, South Korea, Spain, and Switzerland. Several search tools, such as ARCHIE, Gopher, and WAIS start to appear. Institutions like the National Library of Medicine, Dow Jones, and Dialog are now on line. More ‘worms’ burrow on the net, with as many as 130 reports leading to 12 real ones! This is a further indication of the transition to a wider audience.

1990

https://www.computerhistory.org/internethistory/1990s/