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What is a domain name extension?

Domain name extension is the last part of a domain name. For example, in ‘,’ the domain name extension is .com. A domain name points people directly to your website, and the few letters that make up your domain extension can say a lot about your site to visitors. Choosing a suitable domain extension for your site’s purpose and branding can be pivotal to its success.

Another term for a domain extension is a top-level domain (TLD). TLD is the suffix that follows the domain name in a web address; the most widely used is “.com”. TLDs are managed by the domain name system of the Internet, which controls how domain names are translated into Internet Protocol, or IP, addresses.

There are a few different types of domain name extensions available:

Generic Domain Extensions

A generic domain extension (gTLD) is a type of TLD, an acronym for a domain extension, also known as the last part of a domain name. Generic extensions are the most common form of domain extensions like .com, .net, and .org, and always have at least three letters following the dot. In recent years, the number of generic top-level domains has exploded.

Restricted Domain Extensions

Restricted domain extensions are common TLDs with specific requirements for registering. For example, .gov is only allowed for registrants that are entities and US government entities. Both generic TLDs (gTLDs) and country codes (ccTLDs) can have restrictions. It is up to the TLD’s registry to implement restrictions and decide on the criteria for those restrictions.

Country Code Domain Extensions

Country code domain extensions (ccTLDs) are reserved for each country. This code helps to identify that site as being from a specific country. Common extensions include .uk, for the United Kingdom, .th for Thailand, .in for India, .ae for Dubai, and .cn for china However, these extensions are more flexible and can be used for more than just identifying locations. For example, the domain extension .co is the TLD for Colombia, but it’s also used by businesses and startups the world over.

Sponsored Domain Extensions

This style of the domain extension is limited to certain types of organizations and groups. To register this style of TLD, you must meet certain requirements and there are restrictions on who can register these domains. Common examples of this are the .aero, .gov and .edu domain extensions.

Top 5 Domain Extensions

1. .COM

.COM extension is the most popular and commonly used domain extension. It technically stands for “commercial,” which applies to most sites on the web, but there are no restrictions on who can utilize this extension. From a backlinking perspective, a domain with .com carries much more authority than one with a new or unfamiliar extension. If you have the opportunity to get a .com, you should jump at it. However, if you can’t find a good .com — or don’t want to invest a lot of money to purchase it from a squatter — there are other TLD options to consider.

2. .Net

.Net domains originated for network-type businesses, like email service providers or internet providers. Many websites that are tech related are using .net domains as well. Today, there are no restrictions on who can utilize this domain extension, and it’s typically the number one choice after .com. Then you have to make sure that you don’t use .net if you’re not running the related industry. Because .net implies network and technology.

3. .Org

The .org extension is represented by not-for-profit organizations. However, this is no longer enforced and is a common TLD for education-based websites, schools, and more. You should avoid using .org for a blog or eCommerce site, as they’re not the intended subjects for the extension and could give visitors the wrong impression of your site’s purpose.

4. .Co

.Co stands for both corporation” and “company websites. More specifically, online companies seem to choose this most, opting for it as an alternative to already taken .com addresses. Creating a website with .co makes sense if you are a business, particularly if you’re a young startup that markets itself as original or unique. . Co is also a popular one to pair with ccTLD extensions, like or, to distinguish a business location.

5. .Us

The .us domain name extension is pretty popular as well. This domain name extension can only be registered by citizens and business entities based in the United States of America. It’s a common choice for US-based non-profits, corporations, and full-time US residents.

It is only available to government organizations, but this requirement has been lifted. If your new website or business is very American-focused or patriotic, then this could be a good domain worth using.

How to Choose a Domain Extension?

There are many things you need to consider while choosing a domain name. It’s wise to be careful when choosing one for your site. A thorough understanding of domain name extensions can help make this process infinitely better. Your domain name and domain extension work together to help create a unique and memorable domain name. If you want any guidelines to pick a domain name extension for you, feel free to contact us for hosting consulting.

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