ACME Renewal Information Extension
RFC 9773, “ACME Renewal Information Extension”, is a Proposed Standard document published in June 2025 by A. Gable. The canonical text is published by the RFC Editor.
Abstract
This document specifies how an Automated Certificate Management Environment (ACME) server may provide suggestions to ACME clients as to when they should attempt to renew their certificates. This allows servers to mitigate load spikes and ensures that clients do not make false assumptions about appropriate certificate renewal periods.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 9773 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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