HTTP
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Perhaps the most visible example of the latter approach at work is in
the case of World-Wide Web HTTP servers. It is common practice to
try prefixing the domain name of an organization with "http://www."
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... WHOIS [RFC-954]
www World-Wide Web HTTP [RFC-1945]
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... HTTP connections, or if it is, that the HTTP server be running on
port 80. Finally, even if all of these things are true, there can be
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... Berners-Lee, T., Fielding, R., and H. Nielsen, "Hypertext Transfer Protocol -- HTTP/1.0", RFC 1945, May 1996. ...