ActiveXperts Network Monitor 2019 proactively manages network servers, devices, databases and more.

Microsoft Resource Kits - Windows 2003 Resource Kit

Dumpfsmos.cmd  (Windows 2003 Resource Kit)

The Window Server 2003 Resource Kit is a set of tools that system administrators and engineers use to manage or support a Windows Server 2003 system. Use it to streamline management tasks such as troubleshooting operating system issues, managing Active Directory, configuring networking and security features, and automating application deployment.
Dumpfsmos.cmd - Dump FSMO Roles
This command-line tool dumps the Flexible Single Master Operation (FSMO) roles for a domain. Using DumpFsmos, you can find the names of the domain controllers that are performing forest-wide operations master roles, including schema master and domain naming master, and domain-wide operations master roles, including RID master, primary domain controller emulator, and infrastucture master.