These entries are queried from radb.net using whois, you can try my project getting these.
:AS58021 route: 91.237.240.0/22 descr: route object origin: AS58021 mnt-by: NSNET-MNT created: 2012-04-05T09:30:19Z last-modified: 2012-04-05T09:30:19Z 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: 91.237.240.0/24 descr: route object origin: AS58021 mnt-by: NSNET-MNT created: 2012-04-10T09:52:36Z last-modified: 2012-04-10T09:52:36Z 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: 91.237.241.0/24 descr: route object origin: AS58021 mnt-by: NSNET-MNT created: 2012-04-10T09:53:30Z last-modified: 2012-04-10T09:53:30Z 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: 91.237.242.0/24 descr: route object origin: AS58021 mnt-by: NSNET-MNT created: 2012-04-10T09:54:18Z last-modified: 2012-04-10T09:54:18Z 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