These entries are queried from radb.net using whois, you can try my project getting these.
:AS328907 route: 196.41.77.0/24 descr: OPCO - Sociedade Operacional Angola LNG, S.A origin: AS328907 mnt-by: OPCO-MNT changed: *** [at] alngopco.com 20210809 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source