These entries are queried from radb.net using whois, you can try my project getting these.
:AS38795 route: 121.50.168.0/21 descr: CAT route object for MOC origin: AS38795 mnt-by: MAINT-THIX-CAT-TH changed: chutikan [at] cat.net.th 20071018 source: RADB last-modified: 2023-11-13T15:45:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source