These entries are queried from radb.net using whois, you can try my project getting these.
:AS197169 route: 91.224.52.0/23 descr: TaxNet-Network origin: AS197169 mnt-by: TaxNet-mnt created: 2012-03-27T06:57:50Z last-modified: 2012-03-27T06:57:50Z 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: 91.224.52.0/24 descr: TaxNet-Network origin: AS197169 mnt-by: TaxNet-mnt created: 2014-12-04T13:04:07Z last-modified: 2014-12-04T13:04:07Z 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: 91.224.53.0/24 descr: TaxNet-Network origin: AS197169 mnt-by: TaxNet-mnt created: 2014-12-04T13:05:45Z last-modified: 2014-12-04T13:05:45Z 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