[routing-wg] RPKI - newbie questions

I hope this is the right forum - not sure which RIPE WG is the best to ask these newbie questions. 1. How can one know how many prefixes from the global routing table of 500K prefixes are "RPKI"ed? The best I can find is telnet to rpki-rtr.ripe.net and start counting lines via "sho ip bgp rpki table" or scan http://localcert.ripe.net:8088/roas I know of http://certification-stats.ripe.net/ but that is a graph showing how many LIRs are RPKIed, not how many prefixes have been RPKIed. 2. If I have a prefix and I want to do a similar lookup like whois to see certain parameters of that specific prefix, how can I see whether that specific prefix has RPKI enabled? Is there a whois-rpki thingie? Thanks, Hank