These entries are queried from radb.net using whois, you can try my project getting these.
:AS21951 route: 162.210.88.0/22 origin: AS21951 descr: St. Olaf College 1510 St. Olaf Avenue Northfield MN 55057-1097 United States admin-c: CR127-ARIN tech-c: CR127-ARIN mnt-by: MNT-SOC created: 2021-06-24T19:07:26Z last-modified: 2021-06-24T19:07:26Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.91.180.0/22 origin: AS21951 descr: St. Olaf College 1510 St. Olaf Avenue Northfield MN 55057-1097 United States admin-c: CR127-ARIN tech-c: CR127-ARIN mnt-by: MNT-SOC created: 2021-06-24T19:06:43Z last-modified: 2021-06-24T19:06:43Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:132:b000::/40 origin: AS21951 descr: St. Olaf College 1510 St. Olaf Avenue Northfield MN 55057-1097 United States admin-c: CR127-ARIN tech-c: CR127-ARIN mnt-by: MNT-SOC created: 2021-06-24T19:05:35Z last-modified: 2021-06-24T19:05:35Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source