Domain name customisation? htaccess?

Question

I have my personal website that I am developing so I can showcase my code, photography and digital art and also blogs to the public.

Currently my site structure is :

www.mysite.co.uk/sub-folder

e.g.

www.mysite.co.uk/blog

However I would like to make my site domain structure like what I have seen on some sites:

www.blog.mysite.co.uk

or

www.code.mysite.co.uk

What is this technique called?

How is it achieved? htaccess mod?

Any links or resources please could you send me them.

Thanks

Answer 1

www.mysite.co.uk/sub-domain istn't called "Sub Domain". Its only a sub folder.

This "blog.mysite.co.uk" are subdomains. You must configure them in your Apache Server configuration: http://edwardawebb.com/apache/create-subdomains-apache-easy

Answer 2

You can't add subdomains using htaccess. I suggest you to contact your hosting provider. Usually they give you an ability to add subdomains using their control panel.