These entries are queried from radb.net using whois, you can try my project getting these.
:AS140075 route: 202.29.53.0/24 descr: CAT route object for Rachabhat Institue of Roi-Ed Thailand origin: AS140075 mnt-by: MAINT-THIX-CAT-TH changed: surachai [at] cat.net.th 20200224 source: RADB last-modified: 2023-11-13T15:59:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source