These entries are queried from radb.net using whois, you can try my project getting these.
:AS25250 route: 102.140.128.0/19 descr: GAMTEL ROUTE OBJECT origin: AS25250 mnt-by: GAMTEL-MNTNER changed: *** [at] gamtel.gm 20200225 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 197.148.72.0/21 origin: AS25250 descr: FREE SENEGAL - GAMTEL mnt-by: MAINT-AS37613 changed: daniel [at] dolphintelecom.net 20220615 #10:15:52Z source: RADB last-modified: 2023-11-13T16:11:27Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 212.60.64.0/19 descr: Gambia Telecommunications company origin: AS25250 notify: ebandeh [at] gamtel.gm mnt-by: GAMTEL-MNTNER created: 2002-10-03T09:30:46Z last-modified: 2018-09-04T15:38:20Z 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: 212.60.64.0/19 descr: GAMTEL ROUTE OBJECT origin: AS25250 mnt-by: GAMTEL-MNTNER changed: *** [at] gamtel.gm 20200225 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2c0f:6780::/32 origin: AS25250 descr: Gamtel Route6 Object mnt-by: GAMTEL-MNTNER changed: *** [at] gamtel.gm 20230106 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source