.htaccess redirect rule same domain but different prefix

Question

I need to redirect following url

admin.example.us

to

myadmin.example.us

I have tried different examples using RewriteBase, RewriteRule, RewriteCond. Nothing quite fits my case and my regex seems to fail.

Thank you for your help

Answer 1

You can use this .htaccess:

RewriteEngine on 
RewriteCond %{HTTP_HOST} ^admin\. [NC]
RewriteRule ^ http://myadmin.example.us%{REQUEST_URI} [NE,L,R=301]