These entries are queried from radb.net using whois, you can try my project getting these.
:AS328180 route: 156.38.8.0/21 descr: Route Object origin: AS328180 mnt-by: BOKL1-MNT changed: *** [at] gmail.com 20170706 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 156.38.8.0/21 descr: MTN RwandaCell origin: AS328180 notify: as16637-notify [at] mtnbusiness.co.za mnt-by: MAINT-AS2905 changed: carlos.pinto [at] mtn.com 20170730 #05:29:36Z source: RADB last-modified: 2023-11-13T15:51:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 156.38.8.0/22 origin: AS328180 descr: MTN Rwanda mnt-by: MAINT-AS2905 changed: cnocisp.za [at] mtn.com 20210826 #10:27:05Z source: RADB last-modified: 2023-11-13T16:08:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 156.38.8.0/23 origin: AS328180 descr: MTN Rwanda mnt-by: MAINT-AS2905 changed: cnocisp.za [at] mtn.com 20210826 #10:36:23Z source: RADB last-modified: 2023-11-13T16:08:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 156.38.8.0/24 origin: AS328180 descr: BK_RO_8 mnt-by: BOKL1-MNT changed: *** [at] bk.rw 20231115 source: AFRINIC rpki-ov-state: valid route: 156.38.9.0/24 origin: AS328180 descr: BK_RO_9 mnt-by: BOKL1-MNT changed: *** [at] bk.rw 20231115 source: AFRINIC rpki-ov-state: valid route: 156.38.10.0/24 origin: AS328180 descr: BK_RO_10 mnt-by: BOKL1-MNT changed: *** [at] bk.rw 20231115 source: AFRINIC rpki-ov-state: valid route: 156.38.11.0/24 origin: AS328180 descr: BK_RO_10 mnt-by: BOKL1-MNT changed: *** [at] bk.rw 20231115 source: AFRINIC rpki-ov-state: valid route: 156.38.12.0/24 origin: AS328180 descr: BK_RO_12 mnt-by: BOKL1-MNT changed: *** [at] bk.rw 20231115 source: AFRINIC rpki-ov-state: valid route: 156.38.13.0/24 origin: AS328180 descr: BK_RO_13 mnt-by: BOKL1-MNT changed: *** [at] bk.rw 20231115 source: AFRINIC rpki-ov-state: valid route: 156.38.14.0/24 origin: AS328180 descr: BK_RO_14 mnt-by: BOKL1-MNT changed: *** [at] bk.rw 20231115 source: AFRINIC rpki-ov-state: valid route: 156.38.15.0/24 origin: AS328180 descr: BK_RO_15 mnt-by: BOKL1-MNT changed: *** [at] bk.rw 20231115 source: AFRINIC rpki-ov-state: valid