These entries are queried from radb.net using whois, you can try my project getting these.
:AS328337 route: 102.134.64.0/21 descr: Viva Telecoms cc origin: AS328337 mnt-by: VTC1-MNT changed: *** [at] vivatelecoms.co.za 20180726 source: AFRINIC rpki-ov-state: valid route: 102.134.64.0/22 descr: Viva Telecoms cc origin: AS328337 mnt-by: VTC1-MNT changed: *** [at] vivatelecoms.co.za 20180726 source: AFRINIC rpki-ov-state: valid route: 102.134.66.0/24 origin: AS328337 descr: NET-102-134-66 mnt-by: VTC1-MNT changed: *** [at] networkstack.co.za 20210118 source: AFRINIC rpki-ov-state: valid route: 102.134.67.0/24 origin: AS328337 descr: Capetown users mnt-by: VTC1-MNT changed: *** [at] networkstack.co.za 20210401 source: AFRINIC rpki-ov-state: valid route: 102.134.68.0/22 descr: Viva Telecoms cc origin: AS328337 mnt-by: VTC1-MNT changed: *** [at] vivatelecoms.co.za 20180726 source: AFRINIC rpki-ov-state: valid route6: 2c0f:ef40::/32 origin: AS328337 descr: Viva IPv6 Aggregate Prefix mnt-by: VTC1-MNT changed: *** [at] networkstack.co.za 20210106 source: AFRINIC rpki-ov-state: valid