These entries are queried from radb.net using whois, you can try my project getting these.
:AS55151 route: 198.17.233.0/24 descr: Pen Bay Healthcare origin: AS55151 mnt-by: MAINT-TVC changed: dan [at] firstlight.net 20151202 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source