These entries are queried from radb.net using whois, you can try my project getting these.
:AS36431 route: 8.3.208.0/24 descr: Userplane /24 L3 #1 origin: AS36431 notify: ipadmin [at] userplane.com mnt-by: MAINT-USERPLANE changed: ipadmin [at] userplane.com 20060403 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 8.3.208.0/24 descr: Creating route for HostDime origin: AS36431 mnt-by: USERPLANE-MNT changed: will.mcbryde [at] level3.com 20060328 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.189.16.0/21 descr: RR-RC-Good Samaritan Hospital-Los Angeles origin: AS36431 mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.189.24.0/23 descr: RR-RC-Good Samaritan Hospital-Los Angeles origin: AS36431 mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.57.34.0/24 descr: Userplane /24 GBLX #1 origin: AS36431 notify: ipadmin [at] userplane.com mnt-by: MAINT-USERPLANE changed: ipadmin [at] userplane.com 20060807 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source