How can I create subdomains on my main domain?
<p>As you all know few sites offer feature which let you specify what type of url you would like to have. Mostly they are of type:</p>

<pre><code>ABC.somedomain.com
DEF.somedomain.com
</code></pre>

<p>(Mostly these sites are blog/genealogy site.)</p>

<p>I do not quiet understand how does it all work. Can you explain me how can I achieve this or point me in right direction? Also how can I test this on localhost to really see if all is working fine. I have this doubt in my mind since many months but it never got cleared.</p>

<p>Thanks in advance:)</p>
