These entries are queried from radb.net using whois, you can try my project getting these.
:AS17750 route: 147.209.0.0/16 descr: CITEC origin: AS17750 mnt-by: MAINT-AS7474 changed: routing [at] cwo.net.au 20010730 source: RADB last-modified: 2023-11-13T16:03:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source