These entries are queried from radb.net using whois, you can try my project getting these.
:AS51874 route: 91.222.16.0/22 descr: AS-HOMENET-SUMY Route origin: AS51874 mnt-by: MNT-HOMENET-SUMY created: 2010-12-07T09:22:51Z last-modified: 2010-12-07T09:22:51Z 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: 91.222.16.0/23 descr: Route 91.222.16.0/23 origin: AS51874 mnt-by: MNT-HOMENET-SUMY created: 2014-02-14T13:18:33Z last-modified: 2014-02-14T13:18:33Z 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: 91.222.18.0/23 descr: Route 91.222.18.0/23 origin: AS51874 mnt-by: MNT-HOMENET-SUMY created: 2014-02-14T13:19:01Z last-modified: 2014-02-14T13:19:01Z 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