These entries are queried from radb.net using whois, you can try my project getting these.
:AS201864 route: 107.181.146.0/24 descr: TRENCH NETWORKS LIMITED origin: AS201864 mnt-by: MNT-SYN created: 2023-06-05T13:05:44Z last-modified: 2023-06-08T15:47:52Z 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: 146.19.138.0/24 origin: AS201864 mnt-by: lir-uk-trenchnetworks-1-MNT created: 2023-03-21T15:25:29Z last-modified: 2023-03-21T15:25:29Z 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: valid