These entries are queried from radb.net using whois, you can try my project getting these.
:AS50374 route: 45.146.64.0/22 origin: AS50374 mnt-by: SIBINTEK-NOC created: 2019-08-28T13:20:28Z last-modified: 2019-08-28T13:20:28Z 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: 109.236.240.0/24 descr: RN-Inform, Moscow origin: AS50374 mnt-by: RN-INFORM-MNT created: 2012-08-22T06:38:25Z last-modified: 2012-08-22T06:38:25Z 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: valid route: 109.236.241.0/24 origin: AS50374 mnt-by: RN-INFORM-MNT created: 2018-11-14T14:18:49Z last-modified: 2018-11-14T14:18:49Z 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: 185.216.100.0/22 origin: AS50374 mnt-by: SIBINTEK-NOC created: 2019-12-26T09:55:26Z last-modified: 2019-12-26T09:55:26Z 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