Subdomains are the third level domains that are used to organize your website content. They are just like folders under your root directory. But they will have a special URL to access. is the regular URL without a subdomain. is a URL with subdomain “products”.

Here the: .com is the first level domain

your site is the second level domain

products are the third level domain

What is the purpose of subdomains?

  1. You can organize your web site like support, help and FAQ at ‘’.And your products and order link under ‘’ etc.
  2. If you have members, or you want to share your disk space with your friends and family, you can create a subdomain for each of them and give access with their user name and password.
  3. You can also organize the email addresses that comes to separate departments on your web site like [email protected], [email protected], etc.
  4. Long URLs are cut short to a subdomain, so it is easy to remember the short URL instead of long URLs. Especially this is true with your affiliate links which are long and with many special characters like ‘?’,’&’ etc. This is hard to remember. So in these cases creating a subdomain for that long URL helps to remember it well.
in S

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