These entries are queried from radb.net using whois, you can try my project getting these.
:AS31246 route: 46.39.160.0/19 descr: NETBOX origin: AS31246 mnt-by: KTVTRINEC-MNT created: 2010-12-16T09:42:26Z last-modified: 2023-08-11T22:59:20Z 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 route: 83.240.0.0/17 descr: NETBOX origin: AS31246 mnt-by: NETBOX-MNT created: 2004-11-19T12:03:19Z last-modified: 2004-11-19T13:07:46Z 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 route: 95.82.128.0/18 descr: NETBOX origin: AS31246 mnt-by: NETBOX-MNT created: 2008-12-13T08:55:00Z last-modified: 2008-12-13T08:55:00Z 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 route: 185.51.240.0/22 descr: NETBOX origin: AS31246 mnt-by: NETBOX-MNT created: 2020-01-14T13:48:48Z last-modified: 2020-01-14T13:48:48Z 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: valid route: 213.155.224.0/19 descr: CZ-OPAVANET origin: AS31246 mnt-by: OPAVANET_CZ_MNT created: 2008-11-02T09:49:33Z last-modified: 2008-11-02T09:49:33Z 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: 2001:4cc8::/31 descr: NETBOX origin: AS31246 mnt-by: NETBOX-MNT created: 2021-01-21T08:27:26Z last-modified: 2021-01-21T08:27:26Z 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: 2a01:4240::/32 descr: NETBOX origin: AS31246 mnt-by: NETBOX-MNT created: 2022-09-21T09:37:52Z last-modified: 2022-09-21T09:37:52Z 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: 2a0a:cac0::/29 origin: AS31246 mnt-by: OPAVANET_CZ_MNT created: 2017-05-19T11:37:31Z last-modified: 2017-05-19T11:37:31Z 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