These entries are queried from radb.net using whois, you can try my project getting these.
:AS327797 route: 154.72.52.0/23 descr: Proxy Route-Object entry for Congo Online Web Services origin: AS327797 mnt-by: MI75929-MNT created: 2014-11-04T14:01:58Z last-modified: 2018-09-04T18:01:22Z source: RIPE-NONAUTH 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: 154.72.52.0/24 origin: AS327797 descr: NET 52 mnt-by: MAINT-AS205996 changed: admin [at] interfiber.net 20221109 #19:56:39Z source: RADB last-modified: 2023-11-13T16:13:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 154.72.54.0/23 origin: AS327797 mnt-by: uk-interfiber-1-mnt mnt-by: MI75929-MNT created: 2018-01-16T18:24:26Z last-modified: 2018-09-04T19:04:55Z source: RIPE-NONAUTH 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