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.net(1) (.NET) A software platform for developing applications from Microsoft. See .NET Framework.
(2) (.NETwork) A top-level Internet domain used by carriers, ISPs and other communications-oriented organizations. Both .net and .com domains are sometimes used by the same company. For example, Comcast uses www.comcast.net as a general-purpose news and entertainment portal, while www.comcast.com is used for its products and services. However, the domain is not restricted, and anyone can register a .net domain, even if they have nothing to do with communications. See Internet domain name.