This list of Internet top-level domain (TLD) extensions contains top-level domains, which are those domains in the DNS root zone of the Domain Name System of the Internet. The official list of all top-level domains is maintained by the Internet Assigned Numbers Authority (IANA) at the Root Zone Database. IANA also oversees the approval process for new proposed top-level domains. As of April 2018, the root domain contains 1543 top-level domains, while a few have been retired and are no longer functional.
Types
What is a Top Level Domain (TLD)? - A Top Level Domain is the bit at the end of web address, right of the last dot. There aren't very many to choose from. But that's set to change because the ...
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)
- country code top-level domains (ccTLD)
- test top-level domains (tTLD)
Original top-level domains
Seven generic top-level domains were created early in the development of the Internet, and predate the creation of ICANN in 1998.
- Name: DNS names
- Entity: intended use
- Notes: general remarks
- IDN: support for internationalized domain names (IDN)
- DNSSEC: presence of DS records for Domain Name System Security Extensions
Infrastructure top-level domain
Country code top-level domains
As of May 20, 2017, there were 255 Country code top-level domains. (For comparison, at the same time the United Nations comprised 193 countries.)
A
B
C
D
E
F
G
H
I / J
K
L
M
N
O / P / Q
R
S
T
U / V
W - Z
Notes
Internationalized country code top-level domains
Source:
Proposed internationalized ccTLDs
ICANN-era generic top-level domains
- Name: DNS name
- Target market: intended use
- Restrictions: restrictions, if any, on who can register, and how the domain can be used
- Operator: entity the registry has been delegated to
- IDN: support for internationalized domain names (IDN)
- DNSSEC: presence of DS records for Domain Name System Security Extensions
English
A
B
C
D
E
F
G
H
I
J … K
L
M
N … O
P, Q
R
S
T, U, V
W, X, Y, Z
Chinese
French
German
Hindi
Italian
Portuguese
Spanish
Internationalized generic top-level domains
All of these TLDs are internationalized domain names (IDN) and support second-level IDNs.
- Notes: general remarks and intended use
- DNSSEC: presence of DS records for Domain Name System Security Extensions
Arabic script
Chinese characters
Cyrillic script
Other script
Geographic top-level domains
- Name: DNS name
- Entity: Target geographic area
- Notes: general remarks
- IDN: support for internationalized domain names (IDN)
- DNSSEC: presence of DS records for Domain Name System Security Extensions
Africa
Asia
Europe
North America
Oceania
South America
Internationalized geographic top-level domains
Brand top-level domains
- Name: DNS name
- Entity: company and/or brand
- Notes: general remarks
- IDN: support for internationalized domain names (IDN)
- DNSSEC: presence of DS records for Domain Name System Security Extensions
Internationalized brand top-level domains
Special-Use Domains
ICANN/IANA has created some Special-Use domain names which are meant for special technical purposes. ICANN/IANA owns all of the Special-Use domain names.
See also
- Generic top-level domain
- Country code top-level domain
- Proposed top-level domain
- IDN Test TLDs
- ISO 3166-1 alpha-2, the standard for two-letter country codes, which most ccTLDs are based on
- Second-level domain, information about .co.jp, .co.uk, .co.kr, .co.nf, etc.
References
External links
- IANA's list of TLDs
- IANA's list of TLDs in machine-readable format
- The Internet Domain Survey
- The Public Suffix List / PSL â€" Maintained by Mozilla
- Open Root Server Network's list of active TLDs
- Registry Agreements at ICANN
- Registry Agreement Termination Info Page at ICANN