2.3.40 DefaultIcon
DefaultIcon specifies the icon to be displayed if no specific icon is set in the directory index.
Description
DefaultIcon specifies the icon to be displayed in the directory index. Specify the URL of the icon to be displayed when none of the following directives is applicable: AddIcon, AddIconByType, and AddIconByEncoding. If you specify an IPv6 address for URL (without omitting http://IP_address), you must enclose the IPv6 address in square brackets ([ ]).
Syntax
DefaultIcon URL
Locations where it can be written
httpsd.conf, <VirtualHost>, <Directory>, and .htaccess
Overwrite permission
Indexes level
Example
DefaultIcon /icons/unknown.gif