These entries are queried from radb.net using whois, you can try my project getting these.
:AS57840 route: 37.209.175.0/24 origin: AS57840 descr: Kontrax mnt-by: COMNET-ADM created: 2020-04-02T12:15:01Z last-modified: 2020-04-02T12:15:01Z 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