.us

From Biocrawler, the free encyclopedia.

.us is the Internet country code top-level domain (ccTLD) for the United States of America, established in 1985. Registrants of .us domains must be United States citizens, residents, or organizations, or a foreign entity with a presence in the United States. Most registrants in the country have registered for .com, .net, .org and other gTLDs, rather than .us, which has traditionally only been used by some state governments.

However, from April 2002, second-level domains became available for commercial use. Previously, registrants could only register third-level domains or higher. The .us domain is administered by NeuStar Inc..

Second-level domains

• .ak.us: Alaska
• .al.us: Alabama
• .ar.us: Arkansas
• .az.us: Arizona
• .ca.us: California
• .co.us: Colorado
• .ct.us: Connecticut
• .dc.us: District of Columbia
• .de.us: Delaware
• .dni.us: distributed national institutes
• .fed.us: federal government agencies
• .fl.us: Florida
• .ga.us: Georgia
• .hi.us: Hawaii
• .ia.us: Iowa
• .id.us: Idaho
• .il.us: Illinois
• .in.us: Indiana
• .isa.us: interstate agencies
• .kids.us: content suitable for children under 13
• .ks.us: Kansas
• .ky.us: Kentucky
• .la.us: Louisiana
• .ma.us: Massachusetts
• .md.us: Maryland
• .me.us: Maine
• .mi.us: Michigan
• .mn.us: Minnesota
• .mo.us: Missouri
• .ms.us: Mississippi
• .mt.us: Montana
• .nc.us: North Carolina
• .nd.us: North Dakota
• .ne.us: Nebraska
• .nh.us: New Hampshire
• .nj.us: New Jersey
• .nm.us: New Mexico
• .nsn.us: native sovereign nations (federally recognized Native American tribes)
• .nv.us: Nevada
• .ny.us: New York
• .oh.us: Ohio
• .ok.us: Oklahoma
• .or.us: Oregon
• .pa.us: Pennsylvania
• .ri.us: Rhode Island
• .sc.us: South Carolina
• .sd.us: South Dakota
• .tn.us: Tennessee
• .tx.us: Texas
• .ut.us: Utah
• .vt.us: Vermont
• .va.us: Virginia
• .wa.us: Washington
• .wi.us: Wisconsin
• .wv.us: West Virginia
• .wy.us: Wyoming

Namespace within states (largely deprecated)

• <locality>.<state>.us: cities, counties, parishes, and townships
• ci.<locality>.<state>.us: city government agencies (subdomain under locality)
• town.<locality>.<state>.us: town government agencies (subdomain under locality)
• co.<locality>.<state>.us: county government agencies (subdomain under locality)
• <school-name>.k12.<state>.us: public school districts
• <school-name>.pvt.k12.<state>.us: private schools
• <school-name>.cc.<state>.us: community colleges
• <school-name>.tec.<state>.us: technical and vocational schools
• <library-name>.lib.<state>.us: state, regional, city, and county libraries
• <organization-name>.state.<state>.us: state government agencies
• <organization-name>.gen.<state>.us: general independent entities (groups not fitting into the above categories)

External links

• .us Domain Registry (http://www.nic.us/)
• IANA .us whois information (http://www.iana.org/root-whois/us.htm)
• usTLD Nexus Requirements (http://www.nic.us/policies/docs/ustld_nexus_requirements.pdf) - Requirements for registrants of .us domains, Portable Document Format
• Kids.us Content Policies (http://www.kids.us/content_policy/content.html)
• RFC 1480: The US Domain (June 1993)

Wikipedia (http://en.wikipedia.org/wiki/Main_Page) .us (http://en.wikipedia.org/wiki/.us) version history (http://en.wikipedia.org/w/index.php?title=.us&action=history) GNU Free Documentation Lizenz (http://en.wikipedia.org/wiki/Wikipedia:Text_of_the_GNU_Free_Documentation_License) CC-by-sa (http://creativecommons.org/licenses/by-sa/2.5/)

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