These entries are queried from radb.net using whois, you can try my project getting these.
:AS37661 route: 154.68.192.0/18 descr: NgREN route object origin: AS37661 mnt-by: NRaE1-MNT changed: *** [at] ngren.edu.ng 20181205 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 154.68.192.0/18 descr: Computer Warehouse Group Nigeria origin: AS37661 mnt-by: RIPE-NCC-LOCKED-MNT created: 2013-12-06T12:39:25Z last-modified: 2018-09-04T17:47:13Z source: RIPE-NONAUTH remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 154.68.192.0/18 origin: AS37661 descr: WACREN mnt-by: MAINT-AS37613 changed: daniel [at] dolphintelecom.net 20230301 #14:19:22Z source: RADB last-modified: 2023-11-13T16:15:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 154.68.226.0/24 origin: AS37661 descr: FOCUS-GROUP notify: noc [at] dolphintelecom.net mnt-by: MAINT-AS37613 changed: ademola [at] dolphintelecom.net 20240408 # 0944Z source: RADB last-modified: 2024-04-08T09:44:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2c0f:f638::/32 descr: NgREN Route6 Object origin: AS37661 mnt-by: NRaE1-MNT changed: *** [at] nuc.edu.ng 20190906 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source