These entries are queried from radb.net using whois, you can try my project getting these.
:AS51015 route: 91.235.28.0/22 descr: IP-Andreev AS route origin: AS51015 mnt-by: MNT-IP-Andreev created: 2012-02-24T17:23:20Z last-modified: 2012-02-24T17:23:20Z 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 route: 194.28.160.0/22 descr: IP-Andreev AS route origin: AS51015 mnt-by: MNT-IP-Andreev created: 2010-07-07T10:59:44Z last-modified: 2010-07-07T10:59:44Z 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