These entries are queried from radb.net using whois, you can try my project getting these.
:AS328844 route: 169.255.52.0/22 origin: AS328844 descr: Afrimax Limited mnt-by: AFRIMAX-MNT changed: *** [at] afrimax.net 20210429 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2c0f:ea80::/32 origin: AS328844 descr: Afrimax Limited mnt-by: AFRIMAX-MNT changed: *** [at] afrimax.net 20210929 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source