These entries are queried from radb.net using whois, you can try my project getting these.
:AS51428 route: 31.134.32.0/20 descr: IRONNET ROUTE NET31 origin: AS51428 mnt-by: IRONNET-MNT created: 2012-01-12T09:55:10Z last-modified: 2014-03-28T11:08:11Z 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: 178.212.176.0/21 descr: IRONNET ROUTE NET178 origin: AS51428 mnt-by: IRONNET-MNT created: 2010-09-21T09:06:54Z last-modified: 2014-03-28T11:00:44Z 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 route6: 2001:678:62c::/48 origin: AS51428 mnt-by: IRONNET-MNT created: 2021-02-03T12:55:29Z last-modified: 2021-02-03T12:55:29Z 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