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History of Domain Extensions

Published on 28 April 16
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In 1984, the Internet Assigned Numbers Authority (IANA) established the first six domain extensions: .com, .edu, .gov, .mil, .org, and .net. Shortly after, the first two-character country code domain extensions (like .uk and .us) were established. In 1988, .int was also introduced.

It wasn’t until after the Internet Corporation for Assigned Names and Numbers (ICANN) was created in 1998 that any new domain extensions (besides country code extensions) came into use. ICANN has an agreement with the United States Department of Commerce and now operates IANA.

After an application period, seven new domain extensions were introduced in 2000: .aero, .biz, .coop, .info, .museum, .name, and .pro. Throughout 2005 and 2007, .cat, .jobs, .mobi, .tel, .travel, and .asia were also established.

New domain extensions are sure to come. Just last month, the first internationalized domain extensions were established. These internationalized domain extensions are the first to not use Latin characters (three of them use Arabic characters and one uses Cyrillic).

Read on to find out the different categories that domain extensions are grouped under and the specific uses for all of the domain extensions previously mentioned above.

Types of Domain Extensions

There are two main types of domain extensions: country code and generic (which is further subdivided into sponsored and unsponsored).

Country code extensions are two-character domain extensions for countries, sovereign states, and territories. Many country code extensions have second-level subdomains, like the .co in .co.uk.

Generic domain extensions include all of the other domain extensions, like .com, .edu, and .biz. Sponsored extensions, like .aero, .coop, and .museum, are managed by an organization that is in charge of the policies regarding their registration. Unsponsored extensions are simply managed by ICANN.

All domain extensions are also either restricted or unrestricted. To register a domain name with a restricted domain extension, you have to meet certain requirements. For example, only accredited educational institutions are eligible to register a domain with a .edu extension. Many country code domain extensions are also restricted and can only be registered by citizens or residents of the country that the extension refers to.

Unrestricted domain extensions, like .com, .org, and .net, can be registered by anyone. Some country code domain extensions are unrestricted, which has resulted in the registration of domain hacks that create a word using the domain extension. Del.icio.us, for example, uses the United States country code .us to form the word delicious.
History of Domain Extensions - Image 1
A List of Specific Uses

Here is an alphabetical list of all generic domain extensions and their specific uses.

.aero – Used in the aviation industry.

.asia – Used in Asia.

.biz – Used by businesses.

.cat – Used for Catalan-language websites.

.com – Intended for use by commercial entities, but it is unrestricted.

.coop – Used by cooperatives.

.edu – Used by post-secondary educational institutions.

.gov – Used by United States government entities.

.info – Intended for use by informative websites, but it is unrestricted.

.int – Used by international, treaty-based organizations.

.jobs – Used by websites dealing with employment.

.mil – Used by the United States military.

.mobi – Used by websites optimized for access on mobile devices.

.museum – Used by museums.

.name – Used by individuals.

.net – Intended for network infrastructure use, but it is unrestricted.

.org – Intended for use by organizations, but it is unrestricted.

.pro – Used by licensed professionals, including those in the legal, accounting, and medical professions.

.tel – Used to store and publish contact information.

.travel – Used by entities in the travel industry.
Conclusion

New domain extensions are constantly being proposed and debated. There is a desire to expand domain extensions to be geography-based like .asia. To that end, domain extensions like .london, .nyc, and .quebec have been proposed.

There has also been widespread support for the domain extension .kids, which would be used by websites designed for children. Contrarily, the .xxx domain extension has just recently been approved after years of debate and it is intended to be used by adult entertainment websites in the near future. What domain extensions do you want to see in the future?
In 1984, the Internet Assigned Numbers Authority (IANA) established the first six domain extensions: .com, .edu, .gov, .mil, .org, and .net. Shortly after, the first two-character country code domain extensions (like .uk and .us) were established. In 1988, .int was also introduced.

It wasn’t until after the Internet Corporation for Assigned Names and Numbers (ICANN) was created in 1998 that any new domain extensions (besides country code extensions) came into use. ICANN has an agreement with the United States Department of Commerce and now operates IANA.

After an application period, seven new domain extensions were introduced in 2000: .aero, .biz, .coop, .info, .museum, .name, and .pro. Throughout 2005 and 2007, .cat, .jobs, .mobi, .tel, .travel, and .asia were also established.

New domain extensions are sure to come. Just last month, the first internationalized domain extensions were established. These internationalized domain extensions are the first to not use Latin characters (three of them use Arabic characters and one uses Cyrillic).

Read on to find out the different categories that domain extensions are grouped under and the specific uses for all of the domain extensions previously mentioned above.

Types of Domain Extensions

There are two main types of domain extensions: country code and generic (which is further subdivided into sponsored and unsponsored).

Country code extensions are two-character domain extensions for countries, sovereign states, and territories. Many country code extensions have second-level subdomains, like the .co in .co.uk.

Generic domain extensions include all of the other domain extensions, like .com, .edu, and .biz. Sponsored extensions, like .aero, .coop, and .museum, are managed by an organization that is in charge of the policies regarding their registration. Unsponsored extensions are simply managed by ICANN.

All domain extensions are also either restricted or unrestricted. To register a domain name with a restricted domain extension, you have to meet certain requirements. For example, only accredited educational institutions are eligible to register a domain with a .edu extension. Many country code domain extensions are also restricted and can only be registered by citizens or residents of the country that the extension refers to.

Unrestricted domain extensions, like .com, .org, and .net, can be registered by anyone. Some country code domain extensions are unrestricted, which has resulted in the registration of domain hacks that create a word using the domain extension. Del.icio.us, for example, uses the United States country code .us to form the word delicious.

History of Domain Extensions - Image 1

A List of Specific Uses

Here is an alphabetical list of all generic domain extensions and their specific uses.

.aero – Used in the aviation industry.

.asia – Used in Asia.

.biz – Used by businesses.

.cat – Used for Catalan-language websites.

.com – Intended for use by commercial entities, but it is unrestricted.

.coop – Used by cooperatives.

.edu – Used by post-secondary educational institutions.

.gov – Used by United States government entities.

.info – Intended for use by informative websites, but it is unrestricted.

.int – Used by international, treaty-based organizations.

.jobs – Used by websites dealing with employment.

.mil – Used by the United States military.

.mobi – Used by websites optimized for access on mobile devices.

.museum – Used by museums.

.name – Used by individuals.

.net – Intended for network infrastructure use, but it is unrestricted.

.org – Intended for use by organizations, but it is unrestricted.

.pro – Used by licensed professionals, including those in the legal, accounting, and medical professions.

.tel – Used to store and publish contact information.

.travel – Used by entities in the travel industry.

Conclusion

New domain extensions are constantly being proposed and debated. There is a desire to expand domain extensions to be geography-based like .asia. To that end, domain extensions like .london, .nyc, and .quebec have been proposed.

There has also been widespread support for the domain extension .kids, which would be used by websites designed for children. Contrarily, the .xxx domain extension has just recently been approved after years of debate and it is intended to be used by adult entertainment websites in the near future. What domain extensions do you want to see in the future?

This blog is listed under Networks & IT Infrastructure Community

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