This document describes an Extensible Provisioning Protocol (EPP) extension called "Registry Maintenance Notification", which is used by EPP servers to notify EPP clients and allow EPP clients to query EPP servers regarding maintenance events.
One of the authors, Tobias Sattler, raised the idea at the ICANN Registrar Stakeholder Group (RrSG) Technical and Operational (TechOps) Subcommittee. They further discussed it in the CPH TechOps Group. The document was submitted to the IETF REGEXT Working Group and adopted based on those discussions. Therefore, this draft was on Standards Track to become an RFC.
After refining the draft, it passed the REGEXT Working Group Last Call, and the Chairs submitted it to IESG for publishing. It then passed the Area Director's evaluation and was in Last Call at IESG, which was successful. Then it moved to the RFC Editor Queue passed the steps there, and was published in December 2021 as RFC9167.
The authors wish to thank the following persons for their feedback and suggestions: James Gould, Michael Bauland, Patrick Mevzek, Quoc-Anh Pham, Raymond Zylstra, Christopher Martens, Anthony Eden, Neal McPherson, Craig Marchant, and Andreas Huber.