These entries are queried from radb.net using whois, you can try my project getting these.
:AS38452 route: 203.84.133.0/24 descr: Proxy-registered route object origin: AS38452 notify: radb [at] hutchcity.com mnt-by: MAINT-AS9304 changed: radb [at] hutchcity.com 20070401 source: RADB last-modified: 2023-11-13T15:40:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source