TLD Information Database

內容

Recently Updated Top-Level Domains

For top-level domain information, visit Domainnamelist.net

domain name

Target market

Restrictions

Operator/Registry

Pricing

DNSSEC Support

IDN Support

Domain Details

Yes

No

Primarily targeted at the Austrian domestic market, but currently it is also often used for domain hacks

Third-level domains like ac.at and gv.at have registration restrictions for certain entities, while other domains are open for anyone to register

NIC.AT

The first year fee is 68.00 euros, followed by 34.00 euros per year thereafter

Yes

Yes

Mainly for American Samoa, but also open internationally, often used for wordplay with the 'as' prefix

None

American Samoan Network Information Center(ASNIC)

The registry sets the price at $50 per year

No

Yes

Meant for Argentinian locals and the Augmented Reality (AR) sector

For second-level domain registration, an Argentine contact address is needed, but foreigners can register. Certain third-level domains have restrictions

Network Information Center Argentina(NIC Argentina)

The registry prices .ar domains at $25,500; .com.ar and .net.ar are priced at $8,500.

Yes

Yes

Reserved for governments of the Antarctic Treaty signatories and groups active in or promoting Antarctica and its surrounding oceans

Only for governments that signed the Antarctic Treaty and entities with activities in Antarctica

Antarctica Network Information Centre Limited

Free

No

No

Mainly for individuals, companies, or groups in Angola

Only entities in Angola can register second and third-level domains, except for .it.ao.

DNS.AO

The registry sets the price at 8,000 Kwanzas

No

No

Primarily for Armenians and businesses, also popular among broadcasters and audio services

None

Armenia Network Information Centre(AM NIC)

Prices vary depending on the registrar, but generally range from 8000 to 12000 AMD.

Yes

No

Targeting the Albanian domestic market and those interested in business dealings with Albania

Second-level domains are unrestricted, while some third-level domains require local specific entities to register

Electronic and Postal Communications Authority (AKEP)

None

No

No

riginally Anguilla's country code domain, it's now mainly for artificial intelligence businesses and tech

None

WHOIS.ai

From April 15, 2023, the price for .ai domains including .com.ai, .net.ai, .off.ai, and .org.ai will be set at $140.

No

No

Primarily aimed at entities in Antigua and Barbuda, German stock corporations, and websites related to agriculture

Second-level domains have no restrictions, but some third-level domains are reserved for local organizations

NIC AG

Non-Antiguan entities pay $150 for a .ag second-level domain and $100 for a third-level domain. Antiguan entities pay $75 for a second-level and $50 for a third-level domain. Domains ending in .org.ag, .edu.ag, and .gov.ag are free.

Yes

No

Mainly targeted at individuals, businesses, or organizations within Afghanistan

Second-level domains are unrestricted, while some third-level domains require local specific entities to register

Afghanistan Network Information Center(AFGNIC)

Prices vary by registrar; the nic.af website lists them at $25

Yes

No

Primarily aimed at individuals, businesses, and organizations in the United Arab Emirates

Second-level domains are unrestricted, while registration for some third-level domains requires being a specific local entity

.aeDA

.ae domain pricing ranges from $30 to $200, depending on the registrar

No

No

Mainly aimed at individuals, businesses, and organizations within the Principality of Andorra

Only Andorran trademarks holders, citizens, residents, or companies are eligible to register

Andorra Telecom

None

Yes

No

Originally for Ascension Island (UK) entities, now used globally by educational and academic groups

None

Ascension Island Network Information Centre

Prices vary by registrar;NIC.AC prices at $99

Yes

Yes

For network infrastructure, such as reverse DNS lookups (mapping IP addresses to domain names)

Not open for registration

Internet Assigned Numbers Authority

None

Yes

No

United States military departments and agencies

Strictly restricted to the U.S. Department of Defense and its subordinate agencies or organizations

Defense Information Systems Agency

None

Yes

No

Targeted at US government agencies and affiliated organizations

Restricted to US government entities, eligible state, county, local government entities, and tribal governments.

Cybersecurity and Infrastructure Security Agency

None

Yes

No

Primarily aimed at educational institutions, particularly higher education institutions in the United States

Only U.S. Department of Education accredited higher education institutions can have one .edu domain each

Educause

Pricing is often set by negotiation between the registry and the organization, and isn't publicly standardized

Yes

Yes

Primarily used by international governmental organizations and treaty organizations to facilitate the dissemination of information related to their activities

Individuals and commercial organizations are not eligible to register .int domain names. Typically, each qualified organization is allowed to register only one .int domain name

Internet Assigned Numbers Authority

Pricing is often set by negotiation between the registry and the organization, and isn't publicly standardized

Yes

No

Primarily targeted at non-commercial entities, such as charities, research institutions, community groups, etc

None

Public Interest Registry

Depending on the registrar, it costs about 10 to 20 US dollars per year

Yes

Yes

總結
The article provides information on various top-level domains, including their target markets, restrictions, operators/registries, pricing, DNSSEC support, and IDN support. Some examples include domains for specific countries like Austria, American Samoa, Argentina, and Angola, as well as domains for specific sectors like artificial intelligence and educational institutions. Pricing and registration restrictions vary for each domain, with some being restricted to specific entities or countries. The domains cater to a wide range of markets, from government entities to educational institutions and non-commercial organizations.