I want another domain to show the same website as my main domain

This article applies to websites hosted on our newer https://cp.blacknighthosting.com platform.

For how to set this up on cp.blacknight.com please see here: https://help.blacknight.com/hc/en-us/articles/212523009-Domain-Forwarding

If you buy a new domain and want it to show or redirect to your current website then you can set up a Domain Alias or Parked Domain

Wordpress\cPanel plans:

Services > Wordpress (cPanel) > cPanel (to access the cPanel control panel directly)
in cPanel go to Domains > Create a new domain

Make sure the "Share document root" option is enabled

Plesk plans:

Sevices > My Services > Click on your plan (not on the domain name itself) > Domain Alias > Create Domain Alias

Enable the Web Service option (at least, see below for further information on all the options)

You have a few options you can enable also when adding this:

Synchronise DNS Zone with Primary Domain
- This feature is not currently supported
Mail Service
- This feature is not currently supported
Redirect with HTTP 301 Code
- If you want to create a redirect rather than just use the same files then enable this. This can be better for Search Engines, but will change what shows in the address bar
Web Service
- Enable this to have www.newdomain.com show the same files as www.primarydomain.com

Pointing to the Alias

You then need to update the DNS records for your new domain to point to your primarydomain. If the new domain is using ns1/ns2.blacknightdns.com nameservers then please see here for how to set that up:

How-do-I-change-DNS-records-for-my-domain

If you need the IP address of your primary domain to point the new domain to then please see here:

What-is-the-IP-address-for-my-website