These entries are queried from radb.net using whois, you can try my project getting these.
:AS17848 route: 160.202.172.0/24 descr: SejongTelecom.co.ltd origin: AS17848 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20180725 #04:21:10Z source: RADB last-modified: 2023-11-13T15:54:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 202.31.187.0/24 descr: SejongTelecom.co.ltd origin: AS17848 notify: network [at] sejongtelecom.net mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20181118 #04:13:42Z source: RADB last-modified: 2023-11-13T15:55:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source