These entries are queried from radb.net using whois, you can try my project getting these.
:AS18171 route: 203.253.160.0/20 descr: KYUNGNAM University origin: AS18171 mnt-by: MAINT-AS4766 changed: luxo [at] kt.co.kr 20030903 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: 203.253.176.0/21 descr: KYUNGNAM University origin: AS18171 mnt-by: MAINT-AS4766 changed: luxo [at] kt.co.kr 20030903 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: 203.253.184.0/22 descr: KYUNGNAM University origin: AS18171 mnt-by: MAINT-AS4766 changed: luxo [at] kt.co.kr 20030903 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: 203.253.188.0/23 descr: KYUNGNAM University origin: AS18171 mnt-by: MAINT-AS4766 changed: luxo [at] kt.co.kr 20030903 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: 203.253.191.0/24 descr: KYUNGNAM University origin: AS18171 mnt-by: MAINT-AS4766 changed: luxo [at] kt.co.kr 20030903 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: 220.149.132.0/22 descr: Proxy-Registered Route Object by DACOM(AS3786) origin: AS18171 remarks: This route object is for a DACOM's customer route remarks: which is being exported under this origin AS. remarks: remarks: This route object was automatically created to prevent remarks: some DACOM peer from rejecting this route because remarks: they may create their filter based on Route Registry DB. notify: noc [at] bora.net mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20060103 source: RADB last-modified: 2023-11-13T16:09:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 220.149.144.0/21 descr: Proxy-Registered Route Object by DACOM(AS3786) origin: AS18171 remarks: This route object is for a DACOM's customer route remarks: which is being exported under this origin AS. remarks: remarks: This route object was automatically created to prevent remarks: some DACOM peer from rejecting this route because remarks: they may create their filter based on Route Registry DB. notify: noc [at] bora.net mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20060103 source: RADB last-modified: 2023-11-13T16:09:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.194.240.0/20 descr: Kyungnam University origin: AS18171 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20120107 source: RADB last-modified: 2023-11-13T16:15:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source