These entries are queried from radb.net using whois, you can try my project getting these.
:AS18331 route: 203.232.148.0/22 descr: contact noc [at] bora.net if necessary origin: AS18331 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021228 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: 210.93.32.0/22 descr: contact noc [at] bora.net if necessary origin: AS18331 mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20021228 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: 220.149.202.0/23 descr: Hyechon college origin: AS18331 mnt-by: MAINT-AS4766 changed: hongseonoh [at] kornet.net 20070212 #10:44:43(UTC) 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: 220.149.204.0/23 descr: Hyechon college origin: AS18331 mnt-by: MAINT-AS4766 changed: hongseonoh [at] kornet.net 20070212 #10:46:06(UTC) 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: 220.149.206.0/24 descr: Hyechon college origin: AS18331 mnt-by: MAINT-AS4766 changed: hongseonoh [at] kornet.net 20070212 #10:47:11(UTC) source: RADB last-modified: 2023-11-13T16:15:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source