These entries are queried from radb.net using whois, you can try my project getting these.
:AS2121 route: 193.0.24.0/21 descr: RIPE-MEETINGS origin: AS2121 mnt-by: RIPE-NCC-MNT created: 2008-04-09T11:04:18Z last-modified: 2012-04-24T10:09:25Z 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: 193.0.24.0/21 descr: ETISALAT ROUTE origin: AS2121 notify: noc [at] emix.net.ae mnt-by: MAINT-AS8966 changed: noc [at] emix.net.ae 20081014 source: RADB last-modified: 2023-11-13T15:39:56Z rpki-ov-state: valid route6: 2001:67c:64::/48 descr: RIPE MEETINGS origin: AS2121 mnt-lower: RIPE-NCC-MNT mnt-routes: RIPE-NCC-MNT mnt-by: RIPE-NCC-MNT created: 2009-10-01T15:57:25Z last-modified: 2009-10-01T15:57:25Z 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