These entries are queried from radb.net using whois, you can try my project getting these.
:AS8309 route: 37.19.128.0/18 descr: SIPARTECH origin: AS8309 mnt-by: SCS-MNT created: 2021-09-22T09:27:58Z last-modified: 2021-09-22T09:27:58Z 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: 62.129.0.0/19 descr: SIPARTECH origin: AS8309 mnt-by: SCS-MNT created: 2010-02-25T17:26:08Z last-modified: 2013-12-15T11:57:59Z 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: 185.242.187.0/24 origin: AS8309 mnt-by: lir-fr-altrnativcom-1-MNT mnt-by: lir-fr-altrnativcom-1-MNT created: 2021-09-23T09:27:32Z last-modified: 2021-09-23T09:27:32Z 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: 217.180.128.0/18 origin: AS8309 mnt-by: SCS-MNT created: 2020-06-02T09:51:25Z last-modified: 2020-06-02T09:51:25Z 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: 2a06:19c0::/29 descr: SIPARTECH origin: AS8309 mnt-by: SCS-MNT created: 2016-03-04T08:31:25Z last-modified: 2016-03-04T08:31:25Z 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