i received a suggestion to mention this on the ripe wg list. similar to geofeed, it allows one to document the prefix length one is using. Publishing End-Site Prefix Lengths https://datatracker.ietf.org/doc/draft-ietf-opsawg-prefix-lengths/ This document specifies how to augment the Routing Policy Specification Language (RPSL) inetnum: class to refer specifically to prefixlen comma-separated values (CSV) data files and describes an optional scheme that uses the Resource Public Key Infrastructure (RPKI) to authenticate the prefixlen data files. randy