These entries are queried from radb.net using whois, you can try my project getting these.
:AS57874 route: 91.236.80.0/23 notify: ripe [at] eurocabel.tv descr: Eurocabel Ltd. origin: AS57874 mnt-by: MNT-EUROCABEL created: 2012-06-25T02:40:13Z last-modified: 2018-02-28T07:36:37Z 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: not_found # No ROAs found, or RPKI validation not enabled for source