These entries are queried from radb.net using whois, you can try my project getting these.
:AS137248 route6: 2402:3640::/32 descr: CAT route object for TCCT-DOMESTIC-AS-AP origin: AS137248 mnt-by: MAINT-THIX-CAT-TH changed: catdb [at] cat.net.th 20171218 source: RADB last-modified: 2023-11-13T15:52:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source