com
, net
, org
, biz
, and info
domains. In addition, the domains name
A name is a term used for identification by an external observer. They can identify a class or category of things, or a single thing, either uniquely, or within a given context. The entity identified by a name is called its referent. A person ...
and pro
are also considered ''generic''; however, these are designated as ''restricted'', because registrations within them require proof of eligibility within the guidelines set for each.
Historically, the group of generic top-level domains included domains created in the early development of the domain name system, that are now sponsored by designated agencies or organizations and are restricted to specific types of registrants. Thus, domains edu
, gov
, int
, and mil
are now considered sponsored top-level domains, along with other themed top-level domains like jobs
. The entire group of domains that do not have a geographic or country designation (see country-code top-level domain) is still often referred to by the term ''generic'' TLDs.
The number of gTLDs as of March 2018 exceeds 1,200.
Types
Overall, IANA distinguishes the following groups of top-level domains: * infrastructure top-level domain ( .arpa) *generic top-level domains (gTLD) *restricted generic top-level domains (grTLD) * sponsored top-level domains (sTLD) *History
The initial set of generic top-level domains, defined by RFC 920 in October 1984, was a set of "general purpose domains": com
, edu
, gov
, mil
, org
. The net
domain was added with the first implementation of these domains. The com
, net
, and org
TLDs, despite their originally specified goals, are now open to use for any purpose.
In November 1988, another TLD was introduced, int
. This TLD was introduced in response to ip6.int
, the in-addr.arpa
. However, in May 2000, the int
domain. All new databases of this type would be created in arpa
(a legacy domain from the conversion of ARPANET), and existing usage would move to arpa
wherever feasible, which led to the use of ip6.arpa
for IPv6 reverse lookups.
By the mid-1990s, there was discussion of the introduction of more TLDs. Jon Postel, as head of arts
, firm
, info
, nom
, rec
, store
, and web
). However, these proposals were abandoned after the U.S. government intervened.
In September 1998, the aero
Aero is a Greek prefix relating to flight and air. In British English, it is used as an adjective related to flight (e.g., as a shortened substitute for aeroplane).
Aero, Ærø, or Aeros may refer to:
Aeronautics Airlines and companies
* Aero (A ...
, biz
, coop
, info
, museum
A museum is an institution dedicated to displaying or Preservation (library and archive), preserving culturally or scientifically significant objects. Many museums have exhibitions of these objects on public display, and some have private colle ...
, name
A name is a term used for identification by an external observer. They can identify a class or category of things, or a single thing, either uniquely, or within a given context. The entity identified by a name is called its referent. A person ...
, pro
.
biz
, info
, and museum
A museum is an institution dedicated to displaying or Preservation (library and archive), preserving culturally or scientifically significant objects. Many museums have exhibitions of these objects on public display, and some have private colle ...
were activated in June 2001, name
A name is a term used for identification by an external observer. They can identify a class or category of things, or a single thing, either uniquely, or within a given context. The entity identified by a name is called its referent. A person ...
and coop
in January 2002, pro
in May 2002, and aero
Aero is a Greek prefix relating to flight and air. In British English, it is used as an adjective related to flight (e.g., as a shortened substitute for aeroplane).
Aero, Ærø, or Aeros may refer to:
Aeronautics Airlines and companies
* Aero (A ...
later in 2002. pro
became a gTLD in May 2002, but did not become fully operational until June 2004.
ICANN added further TLDs, starting with a set of sponsored top-level domains. The application period for these was from December 15, 2003, to March 16, 2004; it resulted in ten applications. Of these, ICANN approved
, cat
, jobs
, mobi
, tel
and travel
Travel is the movement of people between distant geographical Location (geography), locations. Travel can be done by Pedestrian, foot, bicycle, automobile, train, boat, bus, airplane, ship or other means, with or without Baggage, luggage, a ...
. In March 2011, xxx
was approved (one year after an independent review found ICANN had broken its own bylaws by rejecting the application in 2007). Of the remaining applications ( post
, mail
The mail or post is a system for physically transporting postcards, letter (message), letters, and parcel (package), parcels. A postal service can be private or public, though many governments place restrictions on private systems. Since the mid ...
and an alternative tel
proposal), post
was introduced in 2012.
On June 26, 2008, during the 32nd International Public ICANN Meeting in Paris, ICANN started a new process of TLD naming policy to take a "significant step forward on the introduction of new generic top-level domains." This program envisioned the availability of many new or already proposed domains, as well as a new application and implementation process.
Observers believed that the new rules could result in hundreds of new gTLDs being registered.
New top-level domains
The introduction of several generic top-level domains over the years had not stopped the demand for more gTLDs; ICANN received many proposals for the establishment of new top-level domains. Proponents argued for a variety of models, ranging from adoption of policies for unrestricted gTLDs (see above) to chartered gTLDs for specialized uses by specialized organizations. In 2008, a new initiative foresaw a stringent application process for new domains, adhering to a restricted naming policy for ''open gTLDs'', ''community-based'' domains, andPopularity
Most popular gTLDs as of 2018.Top TLDs
Top City TLDs
* The number of new gTLD sites found for each TLD in the latest Alexa Top 1 Million listTerminology
Unrestricted generic top-level domains are those domains that are available for registration by any person or organization for any use. The prominent gTLDs in this group are com
, net
, org
, and info
. However, info
was the only one of these, and the first, that was explicitly chartered as unrestricted. The others initially had a specific target audience. However, due to lack of enforcement, they acquired an unrestricted character, which was later grandfathered.
Sponsored sTLD
The term ''sponsored top-level domain'' is derived from the fact that these domains are based on theme concepts proposed by private agencies or organizations that establish and enforce rules restricting the eligibility of registrants to use the TLD. For example, theaero
Aero is a Greek prefix relating to flight and air. In British English, it is used as an adjective related to flight (e.g., as a shortened substitute for aeroplane).
Aero, Ærø, or Aeros may refer to:
Aeronautics Airlines and companies
* Aero (A ...
TLD is sponsored by the Société Internationale de Télécommunications Aéronautiques, which limits registrations to members of the air-transport industry.
The new gTLD program saw the arrival of many such top-level domains, with a ''restricted open'' policy, eligible to those active in a regulated industry, such as .pharma or .bank, or in other industrial domains such as .safety
Geographic gTLD
A geographic TLD (or ''GeoTLD'') is a generic top-level domain using the name of or invoking an association with a geographical, geopolitical, ethnic, linguistic, or cultural community. As of 2009, only two GeoTLDs existed: the sponsored domains .cat
, for the Catalan language and culture and .asia
; as of 2014 there were many more, including .kiwi
, .paris
, .scot
and .gal
, but many others are being added regularly.
Brand gTLD
Brands have also applied to get their brand as a top-level domain. Specification 13 is an addendum to the registry contract that describes specific provisions to brands to run their Top Level Domain in a closed fashion. 517 applications to qualify to Spec 13 were made to ICANN, 36 requests were rejected by ICANN or withdrawn by the applicant, 4 are pending review. In 2018, Spamhaus rated .men as the worstExpansion of gTLDs
The new generic top-level domain (gTLD) application system opened on January 12, 2012. The application window was initially to close on April 12, 2012. However, ICANN's Chief Operating Officer, Akram Atallah, stated there was a glitch in the TLD application system leaving applicants' information visible to others. The system was shut down to protect applicants' information, and measures were taken to resolve the situation. ICANN re-opened the TLD Application System on May 21, allowing applicants to submit and review their applications until May 30, 2012. On "Reveal Day" June 13, 2012, it was announced that ICANN received about 1,930 applications for new gTLDs, 751 of which were contested. It was expected for the new gTLDs to go live in June 2013. However, as of March 2013 only non-Latin domains have gone through Initial Evaluation. The updated timeline suggested the new TLDs will go live in November 2013. On November 26, first seven new generic top-level domains, .bike, .clothing, .guru, .holdings, .plumbing, .singles, and .ventures, have entered the Sunrise period. A lottery was held in December 2012 to determine the order in which ICANN would evaluate the 1,930 applications. After the Application Window there was a public comment period from June 13, 2012, to September 26, 2012, in which the public could express their views on the individual new gTLD applications submitted. Concerns were raised over Closed Generic applications in which the applicant would be the sole registrant for the TLD. In particular objections were raised by publishers over Amazon's .book application. Of the technology giants,New gTLD launches
On July 15, 2013, the first four new gTLD agreements were signed in Durban, South Africa. They all consisted of Top Level Domains in non-Latin characters: * International Domain Registry Pty. Ltd.'s شبكة, Arabic for "web" or "network" * Core Association's онлайн, Russian for "online" * Core Association's сайт, Russian for "site" * Spring Fields, LLC's 游戏, Chinese for "game" On July 10, 2014 the 330th gTLD was delegated. On November 9, 2014, the 400th gTLD was delegated in the root. As of 3 May 2015, the number of new gTLDs available is 605. The most popular gTLD has been .guru, launched in February 2014 and reached 50,000 domains in April 2014, briefly surpassed by .club between June 2 and June 9, 2014, with around 55,000 domains; .club was then surpassed by .xyz, which had more than 300,000 domains after one and a half months of existence. The growth of .xyz has been concentrated on one registrar due to a promotion they ran. Recently, SBI bank has started using gTLD as "Bank.SBI" on February 20, 2017.Criticism
Following the vote to expand gTLDs, many trade associations and large companies, led by theSee also
*References
External links