These entries are queried from radb.net using whois, you can try my project getting these.
:AS18323 route: 125.132.159.0/24 descr: Seoul National University Bundang Hospital origin: AS18323 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20170215 #17:00:31Z source: RADB last-modified: 2023-11-13T15:50:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 125.132.205.0/24 descr: Seoul National University Bundang Hospital origin: AS18323 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20170215 #17:00:31Z source: RADB last-modified: 2023-11-13T15:50:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.232.152.0/21 descr: contact noc [at] bora.net if necessary origin: AS18323 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 source: RADB last-modified: 2023-11-13T16:09:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.103.53.0/24 descr: Seoul National University Bundang Hospital origin: AS18323 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20170215 #17:00:31Z source: RADB last-modified: 2023-11-13T15:50:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.103.57.0/24 descr: Seoul National University Bundang Hospital origin: AS18323 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20170215 #17:00:31Z source: RADB last-modified: 2023-11-13T15:50:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.125.8.0/22 descr: contact noc [at] bora.net if necessary origin: AS18323 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20030127 source: RADB last-modified: 2023-11-13T16:09:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 211.223.154.0/23 descr: contact noc [at] bora.net if necessary origin: AS18323 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 source: RADB last-modified: 2023-11-13T16:09:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 211.223.156.0/22 descr: contact noc [at] bora.net if necessary origin: AS18323 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 source: RADB last-modified: 2023-11-13T16:09:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 211.223.160.0/23 descr: contact noc [at] bora.net if necessary origin: AS18323 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 source: RADB last-modified: 2023-11-13T16:09:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 211.253.251.0/24 descr: Seoul National University Bundang Hospital origin: AS18323 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20170215 #17:00:31Z source: RADB last-modified: 2023-11-13T15:50:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 221.163.32.0/24 descr: Seoul National University Bundang Hospital origin: AS18323 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20170215 #17:00:31Z source: RADB last-modified: 2023-11-13T15:50:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 222.235.80.0/24 descr: seoul univ hospital origin: AS18323 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20150107 #07:05:20Z source: RADB last-modified: 2023-11-13T15:47:02Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source