I have reviewed this document as part of the Operational directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written with the intent of improving the operational aspects of the IETF drafts. Comments that are not addressed in last call may be included in AD reviews during the IESG review. Document editors and WG chairs should treat these comments just like any other last call comments. Summary: this document is good to go. The IANA reservations recorded in the history appear to be sorted out with this version and the latest version of draft-ietf-oauth-dyn-reg. Otherwise, the document is well-written and well-specified. Tom Taylor