The label after the final dot is a Top-Level Domain (TLD). When that label is not reserved for one country or territory, it is generic. Registrants attach these endings to names for websites, email, and other services that the Domain Name System (DNS) resolves to reachable addresses.
The Internet Corporation for Assigned Names and Numbers (ICANN) coordinates which endings exist and which organization operates each one. The Internet Assigned Numbers Authority (IANA) records them in the root zone, the list resolvers use to start a lookup. A registry runs one ending. A registrar sells individual names to the people and organizations that hold them.
How a Generic Ending Differs
A generic ending is not a geographic assignment. Familiar labels include .com, .org, and .net. Newer labels describe a field or a use, such as .tech, and still sit outside the country-code set. The registry publishes who may apply. Many of these endings accept registrants from anywhere, subject to that registry’s eligibility rules and to local law.
A Country-Code Top-Level Domain (ccTLD) is two letters tied to a country or territory. Some managers require a local presence. Others sell names to applicants abroad. The two-letter form marks a place either way.
A Sponsored Top-Level Domain (sTLD) is restricted to a defined community. A sponsor, often an association or a public body, sets the membership test. A museum, a cooperative, or another closed group may qualify. A business with no tie to that community usually cannot register.
Who Operates the Name
A registration splits the work across three parties, plus the delegation that publishes the ending.
- Registry: keeps the database of names under one ending, operates the name servers for that ending, and sets wholesale policy.
- Registrar: takes the registrant’s order, checks that the name is available, and submits the create or renew command to the registry.
- Registrant: holds the name and is responsible for the content and the contact data published for it.
- Delegation: places the ending in the root zone so a lookup can find the registry’s name servers from anywhere on the internet.
ICANN contracts with registries for generic endings and accredits registrars that sell them. Country-code endings are delegated through IANA, commonly to a manager designated in connection with that territory. Sponsored endings add the sponsor’s community rules, so eligibility is narrower than on an open generic ending.
Generic, Country-Code, and Sponsored Endings
The ending is part of the name people type, remember, and trust. The groups below differ by who the label is for, not by how familiar any single label has become.
| Trait | Generic | Country-code | Sponsored |
| Assignment | Not reserved for one country | Two letters tied to a country or territory | Reserved for a defined community |
| Examples | .com, .org, .net, .tech | A national or territorial ending | .museum, .coop, and similar community labels |
| Who may register | Applicants who meet the registry’s public rules, often from any country | Depends on the manager, from open sale to a local-presence test | Members of the sponsored community |
| Namespace home | Coordinated as a generic ending | Delegated as a country-code ending | Operated under a sponsor’s charter |
