These entries are queried from radb.net using whois, you can try my project getting these.
:AS46470 route: 141.222.0.0/16 descr: Skidmore College origin: AS46470 mnt-by: MAINT-TVC changed: dan [at] firstlight.net 20171207 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 141.222.0.0/16 descr: RR-RC-SKIDMORE COLLEGE-Northeast origin: AS46470 admin-c: IPADDREG tech-c: IPADDREG notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20201008 #12:40:54Z source: RADB last-modified: 2023-11-13T16:15:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source