These entries are queried from radb.net using whois, you can try my project getting these.
:AS17152 route: 134.181.0.0/16 descr: Bates College origin: AS17152 mnt-by: MAINT-TVC changed: dan [at] firstlight.net 20150630 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source