When you enter the domain name, cPanel automatically populates the Subdomain and Document Root text boxes. To create an addon domain, perform the following steps:Įnter the new addon domain’s name in the New Domain Name text box. Either use cPanel’s Zone Editor interface ( cPanel > Home > Domains > Zone Editor) to correct your DNS zone records or contact your hosting provider to ensure your DNS zone records are correct. You will also be unable to add the domain. Please make sure that the domain is registered with a valid domain registrar. A value of 0 prevents addon domain creation.