Here is Internet Index #4 annotated with sources.
Estimated number of hosts on the Internet: 3,864,000
Percentage increase in number of hosts in Argentina's domain during 1994: 1,100
Number of domains registered between September 15 and October 15, 1994: 1,535
Number of days between publication of "Creating a Government that Works Better
and Costs Less: Status Report 1994" on the Internet and availability in hardcopy form: 1
Based on current growth rates, estimated year when every person on the planet will be on the Internet: 2003
Number of RFCs about system availability during holidays: 1
Number of forthcoming books about PGP: 2
Number of "Dilbert" online newsletters published to date: 2
Number of copies of Enhanced Mosaic licensed from Spyglass, Inc.: over 10 million
Percentage of IBM mainframes running TCP/IP at the end of 1993: 11
Rank of "www" among the most popular host names: 3
Number PCs running TCP/IP at the end of 1993 (worldwide): 4.5 million
Number of Internet-connected U.S. elementary and secondary schools listed in the "K-12 Hotlist": 137
Number of U.S. daily newspapers that are now offering or will soon offer
electronic services: at least 60
Number of WWW servers named www.something.com: 1047
Number of business listings in the Commercial Sites Index: 861
Number of new listings in the past week: 117
Date Boston radio station WZLX airs a commercial with a URL: 4 Oct 1994
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