These entries are queried from radb.net using whois, you can try my project getting these.
:AS50747 route: 204.155.30.0/24 origin: AS50747 descr: For AS50747 USA Datacenter admin-c: NOC32063-ARIN tech-c: NOC32063-ARIN mnt-by: MNT-HSL-50 created: 2024-01-29T14:52:31Z last-modified: 2024-01-29T14:52:31Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source