These entries are queried from radb.net using whois, you can try my project getting these.
:AS35731 route: 91.234.28.0/23 descr: Network Technology Service Ltd. origin: AS35731 mnt-by: MNT-NTSERVICE created: 2011-12-23T10:51:43Z last-modified: 2011-12-23T10:51:43Z 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: 193.227.230.0/23 descr: Network Technology Service Ltd. origin: AS35731 mnt-by: MNT-NTSERVICE created: 2005-10-17T09:47:19Z last-modified: 2005-10-17T09:47:19Z 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: 195.191.138.0/23 descr: Network Technology Service Ltd. origin: AS35731 mnt-by: MNT-NTSERVICE created: 2010-02-11T12:12:42Z last-modified: 2010-02-11T12:12:42Z 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 route6: 2001:67c:2bb8::/48 descr: Network Technology Service Ltd. origin: AS35731 mnt-by: MNT-NTSERVICE created: 2013-09-19T13:59:59Z last-modified: 2013-09-19T13:59:59Z 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