These entries are queried from radb.net using whois, you can try my project getting these.
:AS50101 route: 91.208.44.0/24 descr: GBP Network origin: AS50101 mnt-by: GBP-MNT created: 2009-11-18T23:40:27Z last-modified: 2011-02-04T21:09:09Z 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 route6: 2001:67c:23a8::/48 descr: GBP Network origin: AS50101 mnt-by: GBP-MNT created: 2011-07-27T09:47:00Z last-modified: 2011-07-27T09:47:00Z 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