RFC 9444

Automated Certificate Management Environment (ACME) for Subdomains, August 2023

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O. Friel
R. Barnes
T. Hollebeek
M. Richardson
acme (sec)

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DOI:  https://doi.org/10.17487/RFC9444

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This document specifies how Automated Certificate Management Environment (ACME) can be used by a client to obtain a certificate for a subdomain identifier from a certification authority. Additionally, this document specifies how a client can fulfill a challenge against an ancestor domain but may not need to fulfill a challenge against the explicit subdomain if certification authority policy allows issuance of the subdomain certificate without explicit subdomain ownership proof.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.

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