Here is a quick tip to finding out where the FSMO roles for a domain are located. When dealing with Active Directory on a domain that is unfamiliar, you may be placed in a situation where you have to verify the location of the domains FSMO roles.
One of the quickest ways to do this is through the netdom utility which is part of the Windows Server 2003 support tools package. You can view the location of all five FSMO roles by using this command:
Netdom query fsmo