.aero .biz--an organization in the air-transport industry a business
.com--generally a commercial organization, business, or company
.coop--a nonprofit business cooperative, such as a rural electric cooperative
.edu--a 4-year higher-educational institution
.gov--a non-military governmental entity,usually federal
.info--an informational site for an individual or organization, without restriction
.int--an international organization .jobs information about employment, such as job openings
.museum--a museum
.name--an individual
.net-- suggested for a network administration, but actually used by a wide variety of sites
.org--suggested for a nonprofit organization, but actually used by a wide variety of sites
.pro--a professional, such as an accountant, lawyer or physician
.travel--information about travel
.XXX--a sexually explicit site