There is a need for experimental namespaces able to share in the experimentation with real and identified traffic, subject to the constraints and benefiting from the advantages which may be deployed, administratively, technically, commercially as well as in the public mind, for brainware oriented experiments.

The dot-root project supports such namespaces through the ULD concept [Upper Level Domain]. This means that these namespaces are supported both by a second and a top level domain of the same mnemonic.

Example: .univ for university researchers which will also be supported as .univ.tk

Such ULDs:

• will be organized on a non-profit basis
• are not meant to be active outside of he dot-root experiment, unless if approved by the then prevailing rules of the Internet Community.
• should use a Charter helping the creation of a consistent test registrant community
• will not warranty any quality of service as being part of various test beds
• will use dot-root secretariat as registry to partly compensate its costs

Initial ULDs will include:

.uni	academic projects and societal experiments
.telco	telecom operators testing, training and projects
.atlarge	societal project and information of the @large membership
.wfr	Webs de France project
.dot-root	dot-root concortium own control ULD