These entries are queried from radb.net using whois, you can try my project getting these.
:AS131792 route: 121.151.96.0/24 descr: DGBDRCENTER-AS-KR origin: AS131792 mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20220425 source: RADB last-modified: 2023-11-13T16:10:52Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source