These entries are queried from radb.net using whois, you can try my project getting these.
:AS203966 route: 213.171.70.0/23 descr: origin: AS203966 mnt-by: A1-LIR-MNT created: 2015-09-23T07:27:48Z last-modified: 2021-05-19T14:58:37Z 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