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Subdomains, What are Subdomains in the Domain Name System (DNS) hierarchy?

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Sub-Domains, What are Sub-Domains?

What are Subdomains In the Domain Name System (DNS) hierarchy, a subdomain is a domain that is part of a larger domain.

A subdomain or child domain is the secondary domain, sometimes called a “third-level” domain, created on top of a parent domain. It is an easy way to create a memorable web address for unique content areas of your site.

Example:

  • Your domain is the main folder which contains your web site files.
  • A subdirectory is a folder within this main folder (such as http://www.yourdomain.com/ subdirectory1).

A subdomain, on the other hand, is an alias address created for one of your subdirectories. An Internet user can enter the subdomain in his browser’s address bar to view the subdirectory with which it is associated.

  • mail.yahoo.com and calendar.yahoo.com would be subdomains of the www.yahoo.com domain.

A subdomain combines a unique identifier with a domain name to become essentially a “domain within a domain.” The unique identifier simply replaces the www in the web address.

Uses of Subdomains

Subdomains are commonly used by organizations who wish to assign a unique name to a particular department, function, or service related to the organisation.

What are Subdomains Conclusion

You can research your domain name choices at any of the registrars listed in my article, Where to Register Domain Names. Most of these registrars provide domain name registration, domain name hosting, FREE domain name search facilities and some even give you a FREE domain name if you accept their domain name hosting package.

Well, I hope you found something useful and enjoyed this article, What are Subdomains.


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