These entries are queried from radb.net using whois, you can try my project getting these.
:AS29588 route: 91.247.248.0/22 descr: RU-IVSTAR origin: AS29588 mnt-by: MNT-Ivstar created: 2012-09-26T06:14:45Z last-modified: 2012-09-26T06:14:45Z 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: valid route: 91.247.248.0/24 origin: AS29588 mnt-by: MNT-Ivstar created: 2019-02-04T17:07:31Z last-modified: 2019-02-08T10:10:45Z source: RIPE descr: Ivstar Ltd subscribers 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: 91.247.249.0/24 origin: AS29588 mnt-by: MNT-Ivstar created: 2019-02-04T17:07:45Z last-modified: 2019-02-08T10:11:04Z source: RIPE descr: Ivstar Ltd subscribers 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: 91.247.250.0/24 origin: AS29588 mnt-by: MNT-Ivstar created: 2019-02-04T17:08:03Z last-modified: 2019-02-08T10:11:38Z source: RIPE descr: Ivstar Ltd subscribers 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: 91.247.251.0/24 origin: AS29588 mnt-by: MNT-Ivstar created: 2019-02-04T17:08:56Z last-modified: 2019-02-08T10:12:07Z source: RIPE descr: Ivstar Ltd subscribers 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: 213.108.136.0/21 descr: RU-IVSTAR origin: AS29588 mnt-by: MNT-Ivstar created: 2009-08-20T09:15:17Z last-modified: 2009-08-20T09:15:17Z 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: valid route: 213.108.136.0/24 origin: AS29588 mnt-by: MNT-Ivstar created: 2018-12-03T13:57:27Z last-modified: 2018-12-03T13:57:27Z 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: 213.108.137.0/24 origin: AS29588 mnt-by: MNT-Ivstar created: 2018-12-05T11:31:31Z last-modified: 2018-12-05T11:31:31Z 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 route: 213.108.138.0/24 origin: AS29588 mnt-by: MNT-Ivstar created: 2018-12-03T13:41:43Z last-modified: 2018-12-03T13:41:43Z 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: 213.108.139.0/24 origin: AS29588 mnt-by: MNT-Ivstar created: 2018-12-05T11:31:58Z last-modified: 2018-12-05T11:31:58Z 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: valid route: 213.108.140.0/24 origin: AS29588 mnt-by: MNT-Ivstar created: 2018-12-05T11:32:16Z last-modified: 2018-12-05T11:32:16Z 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: 213.108.141.0/24 origin: AS29588 mnt-by: MNT-Ivstar created: 2018-12-05T11:32:34Z last-modified: 2018-12-05T11:32:34Z 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: 213.108.142.0/24 origin: AS29588 mnt-by: MNT-Ivstar created: 2018-12-05T11:33:20Z last-modified: 2018-12-05T11:33:20Z 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: 213.108.143.0/24 origin: AS29588 mnt-by: MNT-Ivstar created: 2018-12-05T11:33:34Z last-modified: 2018-12-05T11:33:34Z 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: 2a00:f440:a::/48 origin: AS29588 mnt-by: MNT-Ivstar created: 2017-08-04T11:00:53Z last-modified: 2017-08-04T11:00:53Z 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: 2a0e:e6c0:6000::/36 descr: IVSTAR LLC origin: AS29588 mnt-by: NA-MNT created: 2022-06-03T09:20:52Z last-modified: 2022-06-03T09:20:52Z 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