These entries are queried from radb.net using whois, you can try my project getting these.
:AS201897 route: 185.59.252.0/22 descr: Freeport of Riga Authority route origin: AS201897 mnt-by: ROP-mnt created: 2014-06-10T12:57:18Z last-modified: 2016-06-07T05:45:46Z 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: 185.59.254.0/24 descr: Freeport of Riga Authority route origin: AS201897 mnt-by: ROP-mnt created: 2021-07-27T12:23:44Z last-modified: 2021-07-27T12:23:44Z 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: 185.59.255.0/24 descr: Freeport of Riga Authority route origin: AS201897 mnt-by: ROP-mnt created: 2021-07-27T12:24:05Z last-modified: 2021-07-27T12:24:05Z 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