.htaccess redirect everything

Question

here is my situation...

I have one domain

www.ionzuniverse.com OR ionzuniverse.com

I was looking for a way to redirect everything from that domain to a subdomain such as:

iu.ionzuniverse.com

To be specific I need everything that looks like this

www.ionzuniverse.com/somepage OR ionzuniverse.com/somepage

To redirect to something like this

iu.ionzuniverse.com/somepage

How can I use htaccess to do something like this?

Answer 1

<IfModule mod_rewrite.c>
  RewriteEngine On
  RewriteCond %{HTTP_HOST} ^ionzuniverse.com$ [NC,OR]
  RewriteCond %{HTTP_HOST} ^www.ionzuniverse.com$ [NC]
  RewriteRule (.*)$ http://iu.ionzuniverse.com/$1 [R=301,L]
</IfModule>