These entries are queried from radb.net using whois, you can try my project getting these.
:AS23980 route: 165.229.0.0/16 origin: AS23980 descr: YOUNGNAM University in Gyeongsangbuk-do,Korea mnt-by: MAINT-AS4766 changed: ipnoc [at] kt.com 20190111 #05:17:24Z source: RADB last-modified: 2023-11-13T16:15:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source