These entries are queried from radb.net using whois, you can try my project getting these.
:AS328419 route: 102.128.192.0/18 descr: Bayero University origin: AS328419 mnt-by: BU3-MNT changed: *** [at] afrinic.net 20190614 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source