These entries are queried from radb.net using whois, you can try my project getting these.
:AS45389 route: 61.255.147.0/24 descr: Jeonlabukdo Education Research Information Institute origin: AS45389 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20090518 source: RADB last-modified: 2023-11-13T16:15:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 116.125.185.0/24 descr: Jeonlabukdo Education Research Information Institute origin: AS45389 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20090518 source: RADB last-modified: 2023-11-13T16:15:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 180.64.208.0/24 descr: Jeonlabukdo Education Research Information Institute origin: AS45389 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20091008 source: RADB last-modified: 2023-11-13T16:15:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 211.210.30.0/23 descr: Jeonlabukdo Education Research Information Institute origin: AS45389 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20090518 source: RADB last-modified: 2023-11-13T16:15:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source