These entries are queried from radb.net using whois, you can try my project getting these.
:AS57671 route: 192.146.140.0/23 descr: OILPC-NET origin: AS57671 mnt-by: OILPCRU-MNT created: 2012-03-01T11:32:33Z last-modified: 2013-04-26T11:33:26Z 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: valid route: 192.146.140.0/24 descr: OILPC-NET-M1 origin: AS57671 mnt-by: OILPCRU-MNT created: 2013-04-26T11:40:16Z last-modified: 2013-04-26T11:40:16Z 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: valid route: 192.146.141.0/24 descr: OILPC-NET-P1 origin: AS57671 mnt-by: OILPCRU-MNT created: 2013-04-26T11:42:17Z last-modified: 2013-04-26T11:42:17Z 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: valid