IP is 18.104.22.168
But webserver will server content only to your (sub)domain. If you need to use more domains there, consider configuring aliases.
We need to give the IP of our subdomain so that the partner would configure the forwarding of his subdomain to our IP and the site that is located on our subdomain opens. How can I do that? Is it possible to make the subdomain have its own separate IP? If this is a paid service, we are ready to pay