The Addon Domain Maintenance menu allows you to add and remove addon
domains to your account. An addon domain allows you to reach a subdomain
when entering the name of the addon domain into a browser. his means that you
can host additional domains from your account, if allowed by your hosting
provider. Any current addon domains will be listed under Current Addon Domains.
For example, if domain2.com is an addon domain on sub.domain.com, going to
http://www.domain2.com in a browser will bring up sub.domain.com
To access the Addon Domain Maintenance menu, click on the icon in the
Domains section of your cPanel interface.