TLD Types (gTLD, ccTLD, sTLD)
The three main TLD categories: generic (gTLD like .com), country-code (ccTLD like .uk), and sponsored (sTLD like .gov).
TLDs fall into three operational categories. Generic TLDs (gTLDs) include the legacy set like .com, .net, .org plus the 1,200+ New gTLDs from the 2012 ICANN round (.app, .dev, .xyz, brand TLDs like .google). Country-code TLDs (ccTLDs) are two-letter codes assigned to countries and territories under ISO 3166, like .uk, .de, .jp, .io. Sponsored TLDs (sTLDs) are restricted to a specific community and run by a sponsoring organisation, like .gov for US government, .edu for accredited US universities, .museum for museums. Internationalised TLDs (IDN ccTLDs) like .닷넷 are a separate category implemented via Punycode.