These entries are queried from radb.net using whois, you can try my project getting these.
:AS209303 route: 5.3.90.0/24 origin: AS209303 mnt-by: ERTH-MAGISTR mnt-by: ALKOTORG mnt-by: RAID-MNT created: 2019-03-22T18:49:42Z last-modified: 2019-03-22T18:53:05Z source: RIPE descr: ALKOTORG 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