These entries are queried from radb.net using whois, you can try my project getting these.
:AS12817 route: 45.153.147.0/24 origin: AS12817 mnt-by: mnt-de-lowbugs-1 created: 2019-10-29T16:36:17Z last-modified: 2019-10-29T16:36:17Z 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 route: 194.145.150.0/23 descr: GEFOEKOM-NET origin: AS12817 org: ORG-GEF1-RIPE remarks: PI-Address space remarks: non-commercial used netblock by GeFoekoM e.V. mnt-by: GEFOEKOM-MNT created: 1970-01-01T00:00:00Z last-modified: 2004-05-11T02:38:12Z 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: valid route6: 2001:1578:200::/40 descr: GEFOEKOM-DE-ALLOC origin: AS12817 org: ORG-GEF1-RIPE mnt-by: GEFOEKOM-MNT created: 2004-12-29T21:30:40Z last-modified: 2004-12-29T21:30:40Z 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: valid