These entries are queried from radb.net using whois, you can try my project getting these.
:AS3507 route: 63.161.28.0/24 descr: Proxy route object origin: AS3507 mnt-by: MAINT-TARCAN changed: noc [at] tarcan.org.uk 20230505 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source