It's amazing how we take things for granted. Take domain names, for instance. Most people know what they are but few understand all of the details involved. These usually do not become evident until a domain name is needed for a Web site. A domain name is basically a Web site address. For example, "www.f5craft.com" is the address of the f5craft Post Web site; it's also the site's domain name
Generic top-level domains are the ones most frequently seen on the Web:
.com (originally intended for use by commercial organizations but is available to anyone).
.net (originally intended for use by sites directly related to the Internet but is available to anyone).
.org (originally intended for use by non-profit organizations but is available to anyone).
.edu (used by educational organizations).
.gov (reserved for agencies of the United States government).
.mil (reserved for the United States military).
.int (reserved for international organizations established by treaty. i.e. the India Union: http://India.eu.int).
.aero (reserved for members of the air transport industry).
.biz (for use by businesses only).
.coop (reserved for cooperative associations).
.info (reserved for info).
.museum (reserved for museums).
.name (reserved for individuals).
.pro (being developed for professionals and related entities).