These entries are queried from radb.net using whois, you can try my project getting these.
:AS16922 route: 156.110.144.0/20 descr: University of Oklahoma HSC (UNIVER-196) origin: AS16922 mnt-by: MAINT-AS5078 changed: andrew [at] onenet.net 20160222 #19:19:05Z source: RADB last-modified: 2023-11-13T15:48:45Z rpki-ov-state: valid route: 156.110.160.0/19 descr: University of Oklahoma HSC (UNIVER-196) origin: AS16922 mnt-by: MAINT-AS5078 changed: andrew [at] onenet.net 20170909 #02:36:00Z source: RADB last-modified: 2023-11-13T15:51:33Z rpki-ov-state: valid route: 156.110.240.0/20 descr: University of Oklahoma HSC (UNIVER-196) origin: AS16922 mnt-by: MAINT-AS5078 changed: andrew [at] onenet.net 20160222 #19:18:44Z source: RADB last-modified: 2023-11-13T15:48:45Z rpki-ov-state: valid route: 157.142.0.0/16 descr: University of Oklahoma HSC (UNIVER-196) origin: AS16922 mnt-by: MAINT-AS5078 changed: andrew [at] onenet.net 20170906 #22:25:43Z source: RADB last-modified: 2023-11-13T15:51:31Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.35.98.0/24 origin: AS16922 descr: University of Oklahoma admin-c: ZU63-ARIN tech-c: ONENE5-ARIN tech-c: ZU63-ARIN mnt-by: MNT-UNIVER-236-Z created: 2022-04-15T07:00:33Z last-modified: 2022-04-15T07:00:33Z source: ARIN rpki-ov-state: valid route: 192.35.98.0/24 descr: University of Oklahoma (UNIVER-236-Z) origin: AS16922 mnt-by: MAINT-AS5078 changed: andrew [at] onenet.net 20170909 #02:31:06Z source: RADB last-modified: 2023-11-13T15:51:33Z rpki-ov-state: valid route: 199.120.0.0/21 descr: The University Hospitals (THEUNI-15) origin: AS16922 mnt-by: MAINT-AS5078 changed: andrew [at] onenet.net 20170906 #22:37:03Z source: RADB last-modified: 2023-11-13T15:51:31Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.120.8.0/22 descr: The University Hospitals (THEUNI-15) origin: AS16922 mnt-by: MAINT-AS5078 changed: andrew [at] onenet.net 20170906 #22:37:29Z source: RADB last-modified: 2023-11-13T15:51:31Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source