These entries are queried from radb.net using whois, you can try my project getting these.
:AS3335 route: 84.237.48.0/21 descr: NSU origin: AS3335 mnt-by: AS3335-MNT created: 2012-01-10T10:14:56Z last-modified: 2012-01-10T10:14:56Z 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: 84.237.53.0/24 descr: NSUNET origin: AS3335 mnt-by: AS3335-MNT created: 2012-01-25T05:11:17Z last-modified: 2012-01-25T05:11:17Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 84.237.54.0/24 descr: NSUWiFi & Users origin: AS3335 mnt-by: AS3335-MNT created: 2013-02-16T09:44:35Z last-modified: 2013-02-16T09:44:35Z 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: 84.237.55.0/24 descr: NSUNET origin: AS3335 mnt-by: AS3335-MNT created: 2013-02-16T09:40:05Z last-modified: 2013-02-16T09:40:05Z 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