These entries are queried from radb.net using whois, you can try my project getting these.
:AS18035 route: 203.234.72.0/21 descr: HANSEO University origin: AS18035 mnt-by: MAINT-AS4766 changed: luxo [at] kt.co.kr 20030903 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: 203.234.72.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 source: RADB last-modified: 2023-11-13T16:09:29Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.234.73.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 source: RADB last-modified: 2023-11-13T16:09:29Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.234.74.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 source: RADB last-modified: 2023-11-13T16:09:29Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.234.75.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 source: RADB last-modified: 2023-11-13T16:09:29Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.234.76.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 source: RADB last-modified: 2023-11-13T16:09:29Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.234.77.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 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: 203.234.78.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 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: 203.234.79.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 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: 220.66.14.0/23 descr: Hanseo Univ. origin: AS18035 mnt-by: MAINT-AS4766 changed: datakit [at] kornet.net 20091220 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: 220.66.97.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 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: 220.66.98.0/23 descr: Hanseo University origin: AS18035 mnt-by: MAINT-AS4766 changed: luxo [at] kt.co.kr 20031229 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: 220.66.98.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 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: 220.66.99.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 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: 220.82.0.0/21 descr: HANSEO University origin: AS18035 mnt-by: MAINT-AS4766 changed: chss93 [at] soback.kornet.net 20030905 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: 220.82.0.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 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: 220.82.1.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 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: 220.82.2.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 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: 220.82.3.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 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: 220.82.4.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 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: 220.82.5.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 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: 220.82.6.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 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: 220.82.7.0/24 descr: contact noc [at] bora.net if necessary origin: AS18035 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021226 source: RADB last-modified: 2023-11-13T16:09:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source