These entries are queried from radb.net using whois, you can try my project getting these.
:AS25857 route: 192.41.161.0/24 descr: route update via web origin: AS25857 mnt-by: LEVEL3-MNT changed: Christiano.solis [at] level3.com 20080414 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.29.7.0/24 descr: American Chemical Society origin: AS25857 mnt-by: MAINT-AS27506 changed: jesus.pacheco [at] crowncastle.com 20231007 source: RADB last-modified: 2023-11-13T16:18:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.77.250.0/24 descr: NET-208-77-250-0 origin: AS25857 mnt-by: MAINT-AS40068 changed: m.hertrick [at] neovera.com 20070803 #17:55:31(UTC) source: RADB last-modified: 2023-11-13T15:41:15Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.143.112.0/24 descr: route update via web origin: AS25857 mnt-by: LEVEL3-MNT changed: Christiano.solis [at] level3.com 20080414 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:26:4003::/48 descr: American Chemical Society origin: AS25857 mnt-by: MAINT-AS27506 changed: probillard [at] lightower.com 20150603 source: RADB last-modified: 2023-11-13T15:47:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source