A sponsored top-level domain (sTLD) is a generic top-level domain proposed by an independent agency, with that agency establishing and enforcing rules restricting the eligibility of registrants to use the TLD. For example, the .aero TLD is sponsored by the Société Internationale de Télécommunications Aéronautiques, which limits registrations to members of the air-transport industry.
| TLD | Eligibility | Sponsors |
|---|---|---|
| Current sponsored TLDs | ||
| .aero | Members of the air-transport industry | Société Internationale de Télécommunications Aéronautiques |
| .asia | Companies, organisations and individuals in the Asia-Pacific region | DotAsia Organisation |
| .coop | Cooperative associations | Dot Cooperation LLC |
| .museum | Museums | Museum Domain Management Association |
| .pro | Credentialed professionals and related entities | Registry Services Corporation |
| .travel | Travel agents, airlines, hoteliers, tourism bureaus, etc. | The Travel Partnership |
| .cat | Catalan language and culture | Fundació puntCat |
| .jobs | Employment-related sites | |
| .mobi | Mobile devices and services for them | |
| .tel | Internet-based voice/data/text communication | Telname Limited |
| Pending sponsored TLDs | ||
| .post | Postal agencies and similar businesses | Universal Postal Union |
| Rejected sponsored TLDs | ||
| .xxx | Sexually explicit material | ICM Registry, Inc |
There are also non-sponsored generic TLDs which are restricted by other criteria, including .edu (United States accredited colleges), .mil (the United States military), .gov (the United States government), .int (organisations formed by international treaty), and .biz (businesses engaging in commerce on the internet).
Future Top-Level-Domain candidates can be found at Upcoming new Top-Level-Domains
