Customize your default apache page in cpanel

You just have to login to your server via ssh.
Navigate to /usr/local/apache/htdocs

    # cd /usr/local/apache/htdocs

And finaly edit the file index.html

    # nano index.html

If you list the content of /usr/local/apache/htdocs you will see that you can also modify the content of other error pages that cpanel’s apache outputs.

End you are done