These entries are queried from radb.net using whois, you can try my project getting these.
:AS9493 route: 203.227.19.0/24 descr: contact djkim [at] shs.co.kr if necessary origin: AS9493 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20011223 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: 218.237.111.0/24 descr: SejongTelecom.co.ltd origin: AS9493 notify: network [at] sejongtelecom.net mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20171229 #05:16:44Z source: RADB last-modified: 2023-11-13T15:52:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 222.231.55.128/25 descr: SejongTelecom.co.ltd origin: AS9493 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20181024 #05:46:35Z source: RADB last-modified: 2023-11-13T15:54:59Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source