These entries are queried from radb.net using whois, you can try my project getting these.
:AS328638 route: 102.141.64.0/19 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20200526 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 102.141.64.0/20 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20200605 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 102.141.80.0/20 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20200605 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 102.216.104.0/22 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20220328 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 102.216.104.0/23 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20220328 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 102.216.106.0/23 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20220328 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 102.221.220.0/22 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20200820 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 102.221.220.0/23 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20200820 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 102.221.222.0/23 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20200820 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 154.65.112.0/20 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20211209 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 154.65.112.0/21 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20211209 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 154.65.120.0/21 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20211209 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 160.226.160.0/20 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20200526 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 160.226.160.0/21 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20200605 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 160.226.168.0/21 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20200605 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 196.6.112.0/21 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20200526 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 196.6.112.0/22 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20200605 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route: 196.6.116.0/22 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20200605 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid route6: 2c0f:f0a0::/32 descr: Letaba Wireless Internet CC origin: AS328638 mnt-by: LETABA-MNT changed: *** [at] letaba.net 20200526 source: AFRINIC org: ORG-LWIC1-AFRINIC rpki-ov-state: valid