These entries are queried from radb.net using whois, you can try my project getting these.
:AS10180 route: 203.234.120.0/22 descr: contact noc [at] bora.net if necessary origin: AS10180 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 source: RADB last-modified: 2023-11-13T16:09:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.234.124.0/23 descr: contact noc [at] bora.net if necessary origin: AS10180 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 source: RADB last-modified: 2023-11-13T16:09:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.252.208.0/20 descr: KORnet Powered BY Korea Telecom origin: AS10180 mnt-by: MAINT-AS4766 changed: ipnoc [at] kt.com 20181129 #05:33:40Z source: RADB last-modified: 2023-11-13T16:15:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source