![]() The Internet is not owned by anyone it is a collection of networks and gateways that run a common TCP/IP protocol and that all evolved from ARPANET. See the Web link in this entry for topological and descriptive views of the architecture of the Internet. An ISP leases a point of presence (POP) connection to a backbone’s network in order to supply individual users and companies with Internet services. ![]() Examples of NAPs include MCI WorldCom’s “MAE West” NAP in San Jose, California, and the company’s “MAE East” NAP in Washington, D.C. Backbone lines on the Internet are linked at points called Network Access Points (NAPs), where Internet service providers (ISPs) can exchange traffic. These companies often share physical lines and often lease lines from Regional Bell Operating Companies (RBOCs). The backbone networks that make up the Internet are owned and managed by private companies, including MCI WorldCom and Sprint. ![]() When ARPANET grew larger and an increasing number of civilian agencies such as universities and networking companies wanted access to it, administration of the network (now called the Internet) was given to the National Science Foundation (NSF) and then to Internet Network Information Center (InterNIC). The original purpose of ARPANET was to create a wide area network ( WAN) that would allow researchers at various defense and civilian research agencies to communicate with each other and to collaborate on projects. The Internet is the global TCP/IP public internetwork that originated in the ARPANET project of the U.S. Definition of the Internet in Network Encyclopedia.
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