How to Prevent cPanel Users from Creating Certain Domains
cPanel & WHM allows you to deny cPanel users the ability to create certain domains or use certain top-level domains (TLDs).
aliases
How Your Server Handles Domains and Virtual Hosts
This document explains virtual hosts and how cPanel & WHM handles them.
List Parked Domains
This interface lists information about the server's parked domains.
List Subdomains
This interface displays a list of subdomains.
Park a Domain
A parked domain (or alias) is a secondary domain that points to the user’s primary domain.