These entries are queried from radb.net using whois, you can try my project getting these.
:AS22217 route: 153.106.0.0/16 descr: Calvin College origin: AS22217 mnt-by: MAINT-AS237 changed: bcnelson [at] merit.edu 20171120 #19:41:53Z source: RADB last-modified: 2023-11-13T15:52:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source