These entries are queried from radb.net using whois, you can try my project getting these.
:AS208983 route: 146.220.248.0/24 origin: AS208983 descr: RTL.HR-AS mnt-by: BCE-LU-MNT created: 2019-05-15T11:45:04Z last-modified: 2019-05-15T11:45:48Z source: RIPE 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 route6: 2001:678:9a0::/48 origin: AS208983 mnt-by: BCE-LU-MNT created: 2019-05-20T07:08:47Z last-modified: 2019-05-20T07:08:47Z source: RIPE 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