Hi,

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. 

This draft extends RFC 7484 to describe an operational (best) practice to allow Registration Data Access Protocol (RDAP) identifiers to be structured such that they can convey the authoritative server to use for additional RDAP queries.

The concept of the draft is described well including examples. Two early stage implementations (Verisign Labs and OpenRDAP) are listed in the document.

The draft is Ready for publication.

One minor nit - the RFC 2119 text should probably be in its own section rather than within the introduction.