Section 2.1. “optional Resource Public Key Infrastructure (RPKI, [RFC6480]) signature” Did you mean to refer to RFC6488? Section 5, Security Considerations “The geofeed file may also contain an RPKI signature.” You might want to add a reference to the RPKI signature spec. Also, what is this document’s opinion on this signature? It just states that the file “may contain…” I think it warrants adding a sentence or two to elaborate on this. “Besides that, this document does not introduce any new security considerations past those already discussed in the RDAP protocol specifications.” You might want to add references to the other specs that cover the security aspects of the RDAP protocol.