What are subdomains?
Subdomains are the third level domains that are used to organize your web site content.
They are just like folders under your root directory. But they will have a special URL to access.
http://www.yoursite.com
is the regular URL with out a subdomain.
http://products.yoursite.com
is an URL with subdomain “products”. Here the:
.com is the first level domain
yoursite is the second level domain
products is the third level domain
Hosts that allow UNLIMITED Sub-domans:
Host with UNLIMTED Subdomains.
What is the purpose of subdomains?
1. You can organise your web site like support, help and FAQ at ‘http://support.yoursite.com’.And your products and order links under ‘http://store.yoursite.com’ 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 own user name and password.
3. You can also organise the email addresses that comes to seperate departments on your web site like support@support.yoursite.com, orders@store.yoursite.com 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 difficult to remember. So in these cases creating a subdomain for that long URL helps to remember it well.
Where to create subdomains?
Your host should enable subdomain creating feature for you. Number of subdomains that are alloted for you depends on the type of hosting plan you are using. You can use ‘subdomains’ icon or text link in your control panel to create, delete and edit your subdomains.
Now a days almost all hosts allot unlimited subdomains with all hosting packages.
1. Login into yur host panel. You will see a link ‘Subdomains’.
2. Creating a subdomain is easy with your graphical user interface.
1: Enter subdomain name. Create by clicking ‘Add’ button.
Once a subdomain is added, it will be listed in the bottom three dropdown lists.
2: You can redirect your subdomain. Useful in redirecting seperate subdomains to your affiliate products.
3: Remove redirection.
4: Delete subdomains. Deleting subdomains from this list doesn’t delete the folder created during the subdomain creation. So you have to delete it manually.
Caution:
1. If you offer subdomains to your members or friends means you are responsible for the bandwidth and disk space usage.
2. What will be the paths to files and cgi/php scripts?
If you have an image ‘logo.gif’ under ‘support’ subdomain then you can keep your image file path as:
http://support.yoursite.com/logo.gif
But NOT like this:
/support/logo.gif
Same with the cgi-bin too.
The path to cgi files should be:
/public_html/support/cgi-bin/scriptname.cgi
The URL for cgi files will be:
http://support.yoursite.com/cgi-bin/scriptname.cgi









This information has made this subject very clear to me a novice.
I will peruse more of your subject matter.
Thanks very much for the clarity in explaination.
hi
i was able to create subdomains in my cpanel the problem is when i create http://subdomain.domain.com it keeps on redirecting to http://domain.com/subdomain.
any idea on how to fix this?
thanks
Very useful information written in a lucid manner. A few typos, but nothing major – wish you correct them though…
Check your root .htaccess file to see any kind of redirection you have set up. Also ask your host on how to solve it.
.
i have create subdomain but when i added A record my main domain stopped working. please help me how to restart my web site
Once you crete a subdomain in your hostpanel, it will create an ‘A’ record automatically in your site DNS zone. So I am not sure why you added A record again.
You can approach your host to sort this out.
.
I create my subdomain like this- ansar.mydomain.com
but when i enter this address in browser adress bar showing error. page not found. where i hav to upload my file. in the main directory or i hav to creat any new dierctory. and what should be the file name. (index.html)?
Ansar
You need to upload index.html into the ‘ansar’ folder. So when you access ansar.yoursite.com, it will show the index page.
.
Excellent post discribing domains and subdomains. Well written easy to understand and read. If you are new to the internet as I am, then read this post.
i have http://www.subdomain.domain.in.
i keep my http://www.domain.in website files at ftp://ftp.domain.in/domain.in/wwwroot/ folder.
my question is where should be the http://www.subdomain.domain.in websites file should be kept???
i have also tried putting default.aspx file in ftp://ftp.domain.in/domain.in/wwwroot/subdomain/ folder. still i’m not able to open the page i have created i.e. default.aspx…
please let me know the solution…
Hello,
I created a subdomain, but it does not appear in the browser, it is forbidden. What is the problem?
hi i have a websites in localhost like wamp and i work with dremweaver , please how can i put in subdomains , i have a host , i uplod the folder bot dont work plz
Thanks for the post.. I like the way failblog.org uses subdomains for each of their sites.. keeps it very simple and everything is connected.
I want to create a subdomain for our website and I have been searching for answers. This is a very lovely piece…It is definitely useful. thanks for writing.
Excellent post if you have GUI version to work with subdomains. Also you need to add to your DNS server before adding subdomains to second level domain.
I don’t need to look for more information on creating a subdomain, thanks to you. Great post.
If it helps anyone here I also have a tutorial showing how to setup and configure subdomains and virtual hosts of Wamp here: http://www.itutorblog.com/2011/06/how-to-create-a-subdomain-on-wamp/
Can we redirect this subdomain to blogger blog or wordpress blog???
I have a blog in blogger and want to redirect it to my subdomain and is it possible??
Thanks for the post it is very help full for me
I created a subdomain, but it does not appear in the browser WHY? PLEASE HELP ME
Good article. It was very helpful as an introduction to the subject. Thanks!
Man, THANK YOU, very helpfull for me, and a free orientation. Thank you again. Keep the good info
Excellent article over Subdomain. Many kudos.
Am working over subdomain creation in php. It would be great if I get aid for that purpose.
[...] What is a subdomain? How to create a subdomain? | Internet .May 10, 2009 Subdomains are the third level domains that are used to organize your web site content. They are just [...]
[...] the bottom of the page to go to the full desktop version of the website if you wish. Setting up a subdomain like some websites have for mobile use is going too far for a simple blog site. This plugin [...]
Hi. our hosting account and domain registrar is in different provider. where do I add the subdomain? to the hosting we have or to the domain registrar? //godaddy is our domain registrar. and we are hosted at webair. thank you.
Nice article!
I have a question though, the basic subdomain address looks like this : subdomain.domain.com
Can i have it this way? http://www.domain.com/subdomain?
Thanks
THANK YOU, very helpfull for me.I created a subdomain, but it does not appear in the browser WHY? PLEASE HELP ME. Thanks Again.
Raju, for your question: “Can we redirect this subdomain to blogger blog or wordpress blog???”
You can do that. I’ve used subdomains of theinfiniteinfo.com to publish blogger blogs.
Great Information. It helps me a lot.
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Can you create a subdomain without having acess from where you bought the domain from? I.e can I set up a sub domain with just an ftp?
Many thanks
James
[...] these are third level domains, similar to folders of a website but have a special URL for access. products.yoursite.com is an [...]
No. You CAN NOT create subdomain thru FTP. Creating subdomains include creating ‘A’ records in your Website DNS text file in the backend for that subdomain. So simply creating a folder in your ftp software doesn’t mean subdomain.