These entries are queried from radb.net using whois, you can try my project getting these.
:AS209860 route: 212.87.242.0/23 descr: MyNET Michal Bronczkowski, PL origin: AS209860 mnt-routes: PL-CZESTMAN-MNT mnt-by: PL-CZESTMAN-MNT created: 2019-02-08T11:06:32Z last-modified: 2019-02-08T11:08:16Z 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: 212.87.249.0/24 descr: MyNET Michal Bronczkowski, PL origin: AS209860 mnt-by: PL-CZESTMAN-MNT created: 2020-12-08T19:28:22Z last-modified: 2020-12-08T19:28:22Z 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