These entries are queried from radb.net using whois, you can try my project getting these.
:AS328240 route: 80.88.10.0/24 descr: DANGOTE ROUTE origin: AS328240 mnt-by: DIL2-MNT changed: *** [at] dangote.com 20171127 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source