These entries are queried from radb.net using whois, you can try my project getting these.
:AS199604 route: 46.227.172.0/24 descr: MERIT-CZ-PA-CUST origin: AS199604 mnt-by: MAINT-AS2852 changed: novakv [at] cesnet.cz 20160526 #08:59:29Z source: RADB last-modified: 2023-11-13T15:49:30Z rpki-ov-state: valid route: 46.227.172.0/24 descr: OLOMOUCKY-KRAJ-AS199604 descr: MERIT-CZ-PA-CUST origin: AS199604 mnt-by: MERIT-MNT created: 2012-11-09T10:53:34Z last-modified: 2012-11-09T10:53:34Z 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: 2a02:7a00:2::/48 descr: MERIT-CZ-IPv6-OLOMOUCKY_KRAJ origin: AS199604 mnt-by: MERIT-MNT created: 2020-02-26T14:16:17Z last-modified: 2020-02-26T14:16:17Z 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