These entries are queried from radb.net using whois, you can try my project getting these.
:AS37652 route: 45.221.212.0/22 descr: PCN-Range-45 origin: AS37652 mnt-by: PCN-MNT changed: *** [at] pcn.co.za 20180110 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 154.66.204.0/22 descr: PCN-Range-154 origin: AS37652 mnt-by: PCN-MNT changed: *** [at] pcn.co.za 20180110 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 169.255.144.0/22 descr: PCN-Range-169 origin: AS37652 mnt-by: PCN-MNT changed: *** [at] pcn.co.za 20180110 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source