These entries are queried from radb.net using whois, you can try my project getting these.
:AS37528 route: 196.216.4.0/22 descr: AISA ROUTE origin: AS37528 mnt-by: AISA-mnt changed: *** [at] aisabuja.com 20190627 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source