How can I 301 redirect specific subdomain URLs using .htaccess?

Question

I need to redirect particular URLs on a subdomain to completely different URLs on a different subdomain. For example:

http://foo.example.com/this-is-my-page

Needs to 301 to:

http://bar.example.com/this-is-really-my-page

I’ve tried setting up a simple Redirect 301 in .htaccess but it doesn't seem to work. For example:

Redirect 301 http://foo.example.com/this-is-my-page http://bar.example.com/this-is-really-my-page

Answer 1

try this:

RewriteEngine On
RewriteCond %{HTTP_HOST} ^sub\.domain\.com$ [NC]
RewriteRule ^(.*) http://newsub.domain.com/ [L,R]

it works on my side