These entries are queried from radb.net using whois, you can try my project getting these.
:AS328931 route: 102.219.148.0/22 descr: WO origin: AS328931 mnt-by: WA11-MNT changed: *** [at] mitss.co.za 20211110 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source