Determine FSMO role holders

How to Determine the RID, PDC, and Infrastructure FSMO Holders of a Selected Domain

1. Click Start, click Run, type dsa.msc, and then click OK.
2. Right-click the selected Domain Object in the top left pane, and then click Operations Masters.
3. Click the PDC tab to view the server holding the PDC master role.
4. Click the Infrastructure tab to view the server holding the Infrastructure master role.
5. Click the RID Pool tab to view the server holding the RID master role.

Method 2. Use the command

1. Command prompt, type netdom query fsmo

Method 1. Use the GUI