These entries are queried from radb.net using whois, you can try my project getting these.
:AS33943 route: 84.19.64.0/19 descr: Cesky Bezdrat origin: AS33943 member-of: AS15685:RS-CUSTOMERS:RS-CBEZDRAT mnt-by: JP1140-RIPE-MNT created: 2006-06-05T13:50:00Z last-modified: 2006-06-05T13:50:00Z 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: 2a0a:8380::/29 descr: Cesky Bezdrat descr: Prague, Czech Republic origin: AS33943 mnt-by: JP1140-RIPE-MNT created: 2020-01-06T19:15:38Z last-modified: 2020-01-06T19:15:38Z 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