These entries are queried from radb.net using whois, you can try my project getting these.
:AS18308 route: 1.228.36.0/24 descr: proxy for HANARO TELECOM route origin: AS18308 mnt-by: MAINT-HANARO changed: ce-support [at] us.ntt.net 20101211 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 1.228.37.0/24 descr: proxy for HANARO TELECOM route origin: AS18308 mnt-by: MAINT-HANARO changed: ce-support [at] us.ntt.net 20101211 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 1.228.38.0/24 descr: proxy for HANARO TELECOM route origin: AS18308 mnt-by: MAINT-HANARO changed: ce-support [at] us.ntt.net 20101211 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 58.184.245.0/24 descr: KORNET origin: AS18308 mnt-by: MAINT-AS4766 changed: chinny7904 [at] kornet.net 20070429 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: 58.184.246.0/24 descr: KORNET origin: AS18308 mnt-by: MAINT-AS4766 changed: chinny7904 [at] kornet.net 20070429 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: 211.34.150.0/24 descr: KORNET origin: AS18308 mnt-by: MAINT-AS4766 changed: chinny7904 [at] kornet.net 20070429 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: 211.248.186.0/24 descr: KORNET origin: AS18308 mnt-by: MAINT-AS4766 changed: chinny7904 [at] kornet.net 20070429 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: 211.248.187.0/24 descr: KORNET origin: AS18308 mnt-by: MAINT-AS4766 changed: chinny7904 [at] kornet.net 20070429 source: RADB last-modified: 2023-11-13T16:15:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source