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Monday, January 29, 2018

This list of Internet top-level domain 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 February 2017, the root domain contains 1528 top-level domains, while a few have been retired and are no longer functional.

Types


Top 3 Benefits of Country Code Top-Level Domains
Top 3 Benefits of Country Code Top-Level Domains. Source : hostpapa.blog

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


The new TLDs (top-level domains) - 1&1
The new TLDs (top-level domains) - 1&1. Source : www.1and1.com

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


Choosing a TLD that suits your startup best - WhoAPI blog
Choosing a TLD that suits your startup best - WhoAPI blog. Source : whoapi.com

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


The new TLDs (top-level domains) - 1&1
The new TLDs (top-level domains) - 1&1. Source : www.1and1.com

Source:

Proposed internationalized ccTLDs

ICANN-era generic top-level domains


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gTLDs and SEO: Google's Take | Cramer Krasselt. Source : c-k.com

  • 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


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How To Make a Wordpress Website - Step By Step - Digters. Source : digters.com

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


What the new top-level domains from ICANN mean for you | Digital ...
What the new top-level domains from ICANN mean for you | Digital .... Source : www.digitaltrends.com

  • 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


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How to set up a WordPress website using Hostgator: a step-by-step .... Source : imstartpage.com

Brand top-level domains


What the new top-level domains from ICANN mean for you | Digital ...
What the new top-level domains from ICANN mean for you | Digital .... Source : www.digitaltrends.com

  • 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


 
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