How Can I Determine Which Containers Link to Group Policy?

Start the Active Directory Users and Computers snap-in (Start, Programs, Administrative Tools, Active Directory Users and Computers).

Right-click a container that links to the Group Policy you want to
check.

Select the Group Policy tab.

Select the Links tab.

Select the domain you want to search for the Group Policy and click Find Now. You'll see a list of all containers linking to the selected Group Policy.