These entries are queried from radb.net using whois, you can try my project getting these.
:AS328974 route: 102.217.228.0/22 descr: ROUTE-DATONET-4.1 origin: AS328974 mnt-by: DL7-MNT changed: *** [at] datonet.co.za 20220216 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 102.217.228.0/23 descr: ROUTE-DATONET-4.2 origin: AS328974 mnt-by: DL7-MNT changed: *** [at] datonet.co.za 20220401 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 102.217.230.0/23 descr: ROUTE-DATONET-4.3 origin: AS328974 mnt-by: DL7-MNT changed: *** [at] datonet.co.za 20220401 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2c0f:5f00::/32 descr: ROUTE-DATONET-6.1 origin: AS328974 mnt-by: DL7-MNT changed: *** [at] datonet.co.za 20220216 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source