The domains that you add in WHM by creating a cPanel account are still subject to 3 to 48 hours propagation time. This means, after you point the domain to the correct nameservers, it will take up to 48 hours to begin to work. The correct name servers are dns1.midphase.com and dns2.midphase.com, unless you have custom name servers set up. The same applies for adding a domain to a cPanel account. This will created DNS records for it on our name servers, but will take time to propagate.