This is a list of non-internationalized internet top-level domain suffixes (TLDs). Last update: January 2020.
The number of TLDs has recently exploded due to the addition of pretty much arbitrary entries, making it intractable to keep this list up-to-date.
Check the IANA website for the current list (although it won't explain the meaning of the entries). Info about specific TLDs may be found on ICANNWiki.
ac Ascension Island ad Andorra ae United Arab Emirates af Afghanistan ag Antigua and Barbuda ai Anguilla al Albania am Armenia an Netherlands Antilles ao Angola aq Antarctica ar Argentina as American Samoa at Austria au Australia aw Aruba ax Åland az Azerbaijan ba Bosnia and Herzegovina bb Barbados bd Bangladesh be Belgium bf Burkina Faso bg Bulgaria bh Bahrain bi Burundi bj Benin bm Bermuda bn Brunei Darussalam bo Bolivia br Brazil bs Bahamas bt Bhutan bv Bouvet Island bw Botswana by Belarus bz Belize ca Canada cc Cocos (Keeling) Islands cd Democratic Republic of the Congo (Kinshasa) cf Central African Republic cg Republic of the Congo (Brazzaville) ch Switzerland ci Cote D'Ivoire (Ivory Coast) ck Cook Islands cl Chile cm Cameroon cn China co Colombia cr Costa Rica cs Czechoslovakia (former, before 1993) cu Cuba cv Cape Verde cw Curaçao cx Christmas Island cy Cyprus cz Czech Republic dd East Germany (never used) de Germany dj Djibouti dk Denmark dm Dominica do Dominican Republic dz Algeria ec Ecuador ee Estonia eg Egypt eh Western Sahara er Eritrea es Spain et Ethiopia eu European Union fi Finland fj Fiji fk Falkland Islands (Malvinas) fm Federated States of Micronesia fo Faroe Islands fr France fx French European Territories (not in use) ga Gabon gb Great Britain (UK) gd Grenada ge Georgia gf French Guiana gg Guernsey gh Ghana gi Gibraltar gl Greenland gm The Gambia gn Guinea gp Guadeloupe gq Equatorial Guinea gr Greece gs South Georgia and the South Sandwich Islands gt Guatemala gu Guam gw Guinea-Bissau gy Guyana hk Hong Kong hm Heard and McDonald Islands hn Honduras hr Croatia (Hrvatska) ht Haiti hu Hungary id Indonesia ie Ireland il Israel im Isle of Man in India io British Indian Ocean Territory iq Iraq ir Iran is Iceland it Italy je Jersey jm Jamaica jo Jordan jp Japan ke Kenya kg Kyrgyzstan kh Cambodia ki Kiribati km Comoros kn Saint Kitts and Nevis kp Korea (North) kr Korea (South) kw Kuwait ky Cayman Islands kz Kazakhstan la Laos lb Lebanon lc Saint Lucia li Liechtenstein lk Sri Lanka lr Liberia ls Lesotho lt Lithuania lu Luxembourg lv Latvia ly Libya ma Morocco mc Monaco md Moldova me Montenegro mg Madagascar mh Marshall Islands mk Republic of Macedonia ml Mali mm Myanmar mn Mongolia mo Macau mp Northern Mariana Islands mq Martinique mr Mauritania ms Montserrat mt Malta mu Mauritius mv Maldives mw Malawi mx Mexico my Malaysia mz Mozambique na Namibia nc New Caledonia ne Niger nf Norfolk Island ng Nigeria ni Nicaragua nl Netherlands no Norway np Nepal nr Nauru nt Neutral Zone (retired in 1993) nu Niue nz New Zealand (Aotearoa) om Oman pa Panama pe Peru pf French Polynesia pg Papua New Guinea ph Philippines pk Pakistan pl Poland pm Saint-Pierre and Miquelon pn Pitcairn Islands pr Puerto Rico ps Palestinian Territories pt Portugal pw Palau py Paraguay qa Qatar re Réunion Island ro Romania rs Serbia ru Russian Federation rw Rwanda sa Saudi Arabia sb Solomon Islands sc Seychelles sd Sudan se Sweden sg Singapore sh Saint Helena si Slovenia sj Svalbard and Jan Mayen Islands sk Slovak Republic sl Sierra Leone sm San Marino sn Senegal so Somalia sr Suriname ss South Sudan st São Tomé and Príncipe su USSR (former) sv El Salvador sx Sint Maarten sy Syria sz Swaziland tc Turks and Caicos Islands td Chad tf French Southern Territories tg Togo th Thailand tj Tajikistan tk Tokelau tl East Timor tm Turkmenistan tn Tunisia to Tonga tp East Timor (old code) tr Turkey tt Trinidad and Tobago tv Tuvalu tw Taiwan tz Tanzania ua Ukraine ug Uganda uk United Kingdom um US Minor Outlying Islands (not in use) us United States uy Uruguay uz Uzbekistan va Vatican City State (Holy See) vc Saint Vincent and the Grenadines ve Venezuela vg Virgin Islands (British) vi Virgin Islands (U.S.) vn Vietnam vu Vanuatu wf Wallis and Futuna Islands ws Samoa ye Yemen yt Mayotte yu Serbia and Montenegro (former Yugoslavia, domain expired in 2010) za South Africa zm Zambia zr Zaire (former, domain expired in 2001) zw Zimbabwe
aero Air-transport industry asia Companies, organizations, and individuals based around Asia, Australia and the Pacific biz Businesses cat Catalan com Unrestricted (former US Commercial) coop Cooperatives edu US Educational gov US Government info Unrestricted int International jobs For advertising jobs mil US Military mobi For mobile devices museum Museums name For individuals net Unrestricted (former Network) org Unrestricted (former Non-Profit Organization) pro Professionals tel Contact directory in DNS travel For travel-related entities xxx For sites with sexually-explicit content arpa Old style Arpanet (the first Internet TLD, still in use for infrastructure purposes) nato Nato field (domain expired in 1996)