Active Directory (AD) defines the following FSMO roles:
Domain naming master
There is only one schema master and Domain naming master per forest.
The remaining roles (RID master, PDC master, and Infrastructure master) are per-domain roles.
To determine which roles are owned by a server, run FSMOro.bat ServerName. The batch files contains:
if ""=="%1" goto usage
Ntdsutil roles Connections "Connect to server %1" Quit "select Operation Target" "List roles for connected server" Quit Quit Quit
@echo Provide a server name. Run FSMOro ServerName