Cache batch 6
| .sm || 
San Marino || San Marino|| Domain name must be same as company name or trademark.
| .sn || 
Senegal || Senegal|| Registration allowed for companies only. Individuals are not allowed to register.
| .so || 
Somalia || Somalia|| Relaunched on 1 November 2010.
| .sr || 
Suriname || Suriname||
| .ss || 
South Sudan || South Sudan||
| .st || 
São Tomé and Príncipe || São Tomé|| Also unofficially used in South Tyrol (or province of Bozen, see .bz) and Styria.
| .su || 
Soviet Union || Soviet Union|| Still in use. Also unofficially used by Student Unions.
| .sv || 
El Salvador || Salvador||
| .sx || 
Sint Maarten (Kingdom of the Netherlands) ||Template:Code, Template:Code, and Template:Code already allocated; airport code is SXM.||
| .sy || 
Syria || Syria||
| .sz || 
Eswatini || Swaziland || Registration is restricted to Eswatini organizations with Eswatini Trading Licenses.
| .tc || 
Turks and Caicos Islands (United Kingdom) || Turks and Caicos
| .td || 
Chad || Tchad (French) || Available for registration to entities connected with Chad only.
| .tf || 
French Southern and Antarctic Lands || Terres australes et antarctiques françaises (French) || Seldom used. Restricted to individuals and companies in the European Union, Switzerland, Norway, Iceland, and Liechtenstein.Template:Efn-ua
| .tg || 
Togo || Togo||
| .th || 
Thailand || Thai||
| .tj || 
Tajikistan || Tajik||
| .tk || 
Tokelau || Tokelau||Was previously used as a free domain service to the public.
| .tl || 
East Timor || Timor-Leste || Previous code .tp has been deactivated since 2015.
| .tm || 
Turkmenistan || Turkmen||
| .tn || 
Tunisia || Tunisia||
| .to || 
Tonga || Tonga|| Often used unofficially for Torrent, Turin (Torino in Italian), Toronto, Tokyo, or Tocantins, and also as a domain hack in Slavic languages (to meaning it).
| .tr || 
Turkey || Turkey|| .ct.tr and .nc.tr used by Northern Cyprus.
| .tt || 
Trinidad and Tobago || Trinidad and Tobago
| .tv || 
Tuvalu || Tuvalu|| Used as an abbreviation of television, the domain is operated by GoDaddy; with sponsorship of the Tuvalu government.
| .tz || 
Tanzania || Tanzania|| TLD registrations allowed as of July 2022, no local presence in Tanzania required.
| .ua || 
Ukraine || Ukraine || Registrations in TLD are restricted to trademark holders only; SLD registrations are open
| .ug || 
Uganda || Uganda||
| Template:Anchor.uk || 
United Kingdom || United Kingdom|| The ISO 3166-1 code for the United Kingdom is GB (for Great Britain). UK is an exceptionally reserved ISO 3166-1 code. However, the creation of the .uk TLD predates the ISO 3166-1 list of ccTLDs and is the primary TLD for the United Kingdom.[1]
| .us || 
United States of America || United States|| Registrants must be United States citizens, residents, or organizations, or a foreign entity with a presence in the United States. Formerly commonly used by U.S. State and local governments; see also .gov TLD.
| .uy || 
Uruguay || Uruguay|| 2LD rollout began on 10 July 2012.[2]
| .uz || 
Uzbekistan || Uzbekistan||
| .va || 
Vatican City || Vatican|| Limited to the official sites of the Holy See (including those of the Vatican City State).
| .vc || 
Saint Vincent and the Grenadines || Vincent ||
| .ve || 
Venezuela || Venezuela|| Registration is at the third level.
| .vg || 
British Virgin Islands (United Kingdom) || Virgin Islands ||
| .vi || 
United States Virgin Islands (United States)|| Virgin Islands ||
| .vn || 
Vietnam || Viet Nam (Vietnamese)||
| .vu || 
Vanuatu || Vanuatu||
| .wf || 
Wallis and Futuna || Wallis and Futuna