These entries are queried from radb.net using whois, you can try my project getting these.
:AS56720 route: 91.227.28.0/22 descr: route object origin: AS56720 mnt-by: FORTUNA-MNT mnt-by: SDAMO-MNT created: 2011-05-16T11:16:19Z last-modified: 2012-01-18T09:34:14Z 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: 91.227.28.0/24 descr: route object origin: AS56720 mnt-by: SDAMO-MNT created: 2012-01-18T09:37:03Z last-modified: 2012-01-18T09:37:03Z 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: 91.227.29.0/24 descr: route object origin: AS56720 mnt-by: SDAMO-MNT created: 2012-01-18T09:36:46Z last-modified: 2012-01-18T09:36:46Z 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: 91.227.30.0/24 descr: route object origin: AS56720 mnt-by: SDAMO-MNT created: 2012-01-18T09:36:21Z last-modified: 2012-01-18T09:36:21Z 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: 91.227.31.0/24 descr: route object origin: AS56720 mnt-by: SDAMO-MNT created: 2012-01-18T09:35:42Z last-modified: 2012-01-18T09:35:42Z 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