These entries are queried from radb.net using whois, you can try my project getting these.
:AS50551 route: 81.15.157.0/24 origin: AS50551 mnt-by: MNT-EXATEL created: 2017-04-19T09:17:07Z last-modified: 2017-04-19T09:17:07Z 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