These entries are queried from radb.net using whois, you can try my project getting these.
:AS51097 route: 178.249.248.0/21 descr: beeld-en-geluid PA Block origin: AS51097 mnt-by: MNT-BNG created: 2011-03-17T14:41:55Z last-modified: 2011-03-17T14:53:34Z 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