These entries are queried from radb.net using whois, you can try my project getting these.
:AS328400 route: 154.66.112.0/22 origin: AS328400 descr: Optinet on behalf of Power Cloud mnt-by: MAINT-AS10474 changed: jehad.arnold [at] optinet.net 20210305 #15:03:45Z source: RADB last-modified: 2023-11-13T16:05:08Z rpki-ov-state: valid route: 154.66.112.0/24 origin: AS328400 descr: PowerCloud SDN mnt-by: PSL3-MNT changed: *** [at] pcsp.co.za 20181126 changed: *** [at] pcsp.co.za 20210208 source: AFRINIC rpki-ov-state: valid route: 154.66.113.0/24 descr: PowerCLoud SP origin: AS328400 mnt-by: PSL3-MNT changed: *** [at] pcsp.co.za 20181126 source: AFRINIC rpki-ov-state: valid route: 154.66.114.0/24 descr: PowerCLoud SP origin: AS328400 mnt-by: PSL3-MNT changed: *** [at] pcsp.co.za 20181126 source: AFRINIC rpki-ov-state: valid route: 154.66.115.0/24 origin: AS328400 descr: PowerCloud mnt-by: PSL3-MNT changed: *** [at] pcsp.co.za 20181126 changed: *** [at] pcsp.co.za 20210309 source: AFRINIC rpki-ov-state: valid route6: 2c0f:ece0::/32 origin: AS328400 descr: PowerCloud SDN mnt-by: PSL3-MNT changed: *** [at] pcsp.co.za 20210208 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source