Dear colleagues, We are pleased to invite current and prospective Registry Operators (ROs) and Registry Service Providers (RSPs) to onboard into the Operational Testing & Evaluation (OT&E) environment for the new Registry System Testing (RST) v2.0 service. This environment is being provided to allow users to (1) integrate into the new Registry System Testing API (RST-API), (2) ensure the readiness of registry systems for production RST during the RSP Evaluation Programme and Pre-Delegation Testing of TLDs during the New gTLD Program: Next Round, and (3) verify that the RST v2.0 implementation correctly implements the RST test specifications. More information about the RST v2.0 service, including the process for requesting access, may be found on the new RST v2.0 page on the ICANN website: https://www.icann.org/resources/registry-system-testing-v2.0 To request access to the OT&E environment, users must first complete the steps listed on the page above to generate and publish one or more TLSA records in the DNS for authentication. Then, users must submit a request either by submitting a general inquiry in the Naming Services portal (for existing registry operators) or by emailing globalsupport@icann.org (for prospective Registry Operators or Registry Services Providers). Please note that development work on the RST v2.0 service is still ongoing, and several test cases have not yet been completed. The web page linked to above includes details of the level of coverage for each test suite and will be regularly updated. Participating users will be notified when the OT&E environment is updated and new test cases become available. Users are also encouraged to monitor the “Change Log” sections of the RST v2.0 test specifications ([1]) and API spec ([2]), since these may change during the course of development. Regards, Gavin. [1] https://icann.github.io/rst-test-specs/rst-test-specs.html [2] https://icann.github.io/rst-api-spec/rst-api-spec.html -- Gavin Brown Principal Engineer, Global Domains & Strategy Internet Corporation for Assigned Names and Numbers (ICANN) https://www.icann.org