These entries are queried from radb.net using whois, you can try my project getting these.
:AS37062 route: 196.216.248.0/23 descr: BNI Angola IP Services origin: AS37062 mnt-by: BNIAO-MNT created: 2009-04-22T13:02:50Z last-modified: 2018-09-04T16:03:57Z source: RIPE-NONAUTH remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 196.216.249.0/24 descr: BNI IPv4 Block origin: AS37062 mnt-by: BNI-AO-MNT changed: *** [at] bni.ao 20190629 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:43f8:400::/40 origin: AS37062 descr: BNI-IPv6-NETWORK mnt-by: BNIAO-MNT changed: *** [at] bni.ao 20210301 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source