=== CA Hierarchy ===
A hierarchical structure of a single root with intermediate certs (subroots) is preferred. The single top-level root's public certificate is supplied for Mozilla's root list; the subroots are not. See [[CA:Recommendations_for_Roots]].
CAs that issue certificates under multiple subordinate CAs (i.e., under a root CA whose CA certificate is being requested for inclusion) or under multiple CA hierarchies (i.e., rooted at multiple root CAs, one or more of whose certificates is being requested for inclusion) should provide additional information as noted: