Here’s how to set up a redirect where the address in the address bar remains the same
Do you want to redirect a domain name to another page and in addition want the address to stay the same? You can get this done using Frame forwarding. For this type of forwarding you do need at least one hosting package with room for an additional domain name.
How to set up Frame Forwarding can be read in our guide Forwarding a domain name to another domain name.