These entries are queried from radb.net using whois, you can try my project getting these.
:AS35631 route: 91.215.252.0/23 descr: BaltLine Net SPB origin: AS35631 mnt-by: SPB-BALTLINE-MNT created: 2009-09-21T09:09:20Z last-modified: 2009-09-21T09:09:20Z 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: 91.215.254.0/24 descr: BaltLine Net SPB origin: AS35631 mnt-by: SPB-BALTLINE-MNT created: 2009-09-21T09:10:24Z last-modified: 2009-09-21T09:10:24Z 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: 91.215.255.0/24 descr: BaltLine Net SPB origin: AS35631 mnt-by: SMART-MNT mnt-lower: SMART-MNT mnt-routes: SMART-MNT created: 2009-09-21T09:10:57Z last-modified: 2023-03-01T12:53:19Z 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