These entries are queried from radb.net using whois, you can try my project getting these.
:AS328020 route: 164.160.24.0/22 descr: Gardale Primary IRR Object origin: AS328020 mnt-by: GARDALE-MNT changed: *** [at] gsol.co.za 20200407 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source