Addon Domains and SubDomains are pointed to sub-folders of your hosting account and can have their own error pages. Create error pages you’d like and upload them to the appropriate folders:


public_html/domain1/error404.html
public_html/domain2/error404.html
public_html/subdomain/error404.html

Now you have to direct error requests to these pages.  You can do this by creating .htaccess text files and placing them in the addon/subdomain directories with the following directive: