These entries are queried from radb.net using whois, you can try my project getting these.
:AS57683 route: 171.25.190.0/24 descr: Monitel route origin: AS57683 mnt-by: MONITEL-MNT created: 2012-01-20T16:15:52Z last-modified: 2013-10-16T14:32:17Z 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 route6: 2001:67c:1868::/48 descr: Monitel-v6 route origin: AS57683 mnt-by: MONITEL-MNT created: 2013-10-21T06:45:35Z last-modified: 2013-10-21T06:45:35Z 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