A system and method that facilitates entities acting as agents to manage plural domains for plural registrants includes a domain manager capable of direct attachment to the shared registry system. The domain manager resides on a server of an accredited registrar or on a server of a partner website that has made a server of an accredited registrar authoritative for at least plural domain names. A variety of DNS or zone file information can be altered using simple graphical user interfaces to enter change information and pass that change information to the domain manager server. The domain manager server passes the change information to the DNS servers either directly through the SRS or through an accredited server that passes the change information through the SRS and to the root servers. Most preferably, the domain manager has substantially direct access to the shared registry system, which asynchronously updates the DNS servers. The domain manager may also provide a variety of utilities that allow an operator to perform diagnostics on the domain, its name and its registration.