These entries are queried from radb.net using whois, you can try my project getting these.
:AS328224 route: 156.0.128.0/19 descr: UENR Public IP origin: AS328224 mnt-routes: UOEA1-MNT mnt-by: UOEA1-MNT changed: *** [at] uenr.edu.gh 20180202 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 156.0.128.0/19 origin: AS328224 descr: WACREN mnt-by: MAINT-AS37613 changed: daniel [at] dolphintelecom.net 20230301 #14:42:37Z source: RADB last-modified: 2023-11-13T16:15:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source