These entries are queried from radb.net using whois, you can try my project getting these.
:AS43521 route: 78.41.176.0/21 descr: Recom LLC origin: AS43521 mnt-by: MNT-RU_RECOM mnt-by: MRM1-MNT mnt-routes: MNT-RU_RECOM mnt-routes: MRM1-MNT created: 2007-08-16T11:17:22Z last-modified: 2011-03-24T06:01:39Z 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: 87.117.152.0/21 descr: Recom LLC origin: AS43521 mnt-by: MRM1-MNT mnt-by: MNT-RU_RECOM created: 2017-08-04T08:18:35Z last-modified: 2018-12-19T13:42:30Z 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: 185.52.56.0/22 origin: AS43521 mnt-by: MNT-RU_RECOM mnt-by: MRM1-MNT created: 2019-08-06T14:29:26Z last-modified: 2019-08-06T14:29:26Z 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 route: 185.52.56.0/23 descr: Recom LLC origin: AS43521 mnt-by: MNT-RU_RECOM mnt-by: MRM1-MNT created: 2017-02-08T10:03:07Z last-modified: 2017-02-08T10:03:07Z 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: valid route: 185.52.58.0/23 origin: AS43521 mnt-by: MNT-RU_RECOM mnt-by: MRM1-MNT created: 2019-08-06T14:01:14Z last-modified: 2019-08-06T14:01:14Z 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