These entries are queried from radb.net using whois, you can try my project getting these.
:AS55589 route: 59.0.49.0/24 descr: KITECH origin: AS55589 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20101125 source: RADB last-modified: 2023-11-13T16:15:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 121.148.122.0/23 descr: KITECH origin: AS55589 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20101125 source: RADB last-modified: 2023-11-13T16:15:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 121.148.124.0/22 descr: KITECH origin: AS55589 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20101125 source: RADB last-modified: 2023-11-13T16:15:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 121.170.25.0/24 descr: KITECH origin: AS55589 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20101125 source: RADB last-modified: 2023-11-13T16:15:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 121.170.26.0/23 descr: KITECH origin: AS55589 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20101125 source: RADB last-modified: 2023-11-13T16:15:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 121.170.28.0/22 descr: KITECH origin: AS55589 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20101125 source: RADB last-modified: 2023-11-13T16:15:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 121.174.120.0/22 descr: KITECH origin: AS55589 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20101125 source: RADB last-modified: 2023-11-13T16:15:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 121.174.124.0/24 descr: KITECH origin: AS55589 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20101125 source: RADB last-modified: 2023-11-13T16:15:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.241.116.0/22 descr: KITECH origin: AS55589 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20101125 source: RADB last-modified: 2023-11-13T16:15:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.250.103.0/24 descr: KITECH origin: AS55589 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20101125 source: RADB last-modified: 2023-11-13T16:15:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.250.104.0/21 descr: KITECH origin: AS55589 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20101125 source: RADB last-modified: 2023-11-13T16:15:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.250.104.0/24 descr: SejongTelecom.co.ltd origin: AS55589 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20201223 source: RADB last-modified: 2023-11-13T16:03:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.250.104.0/24 descr: proxy for HANARO TELECOM route origin: AS55589 mnt-by: MAINT-HANARO changed: ce-support [at] us.ntt.net 20101126 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.250.105.0/24 descr: proxy for HANARO TELECOM route origin: AS55589 mnt-by: MAINT-HANARO changed: ce-support [at] us.ntt.net 20101126 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.250.105.0/24 descr: SejongTelecom.co.ltd origin: AS55589 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20201223 source: RADB last-modified: 2023-11-13T16:03:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.250.106.0/24 descr: proxy for HANARO TELECOM route origin: AS55589 mnt-by: MAINT-HANARO changed: ce-support [at] us.ntt.net 20101126 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.250.106.0/24 descr: SejongTelecom.co.ltd origin: AS55589 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20201223 source: RADB last-modified: 2023-11-13T16:03:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.250.107.0/24 descr: SejongTelecom.co.ltd origin: AS55589 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20201223 source: RADB last-modified: 2023-11-13T16:03:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.250.108.0/24 descr: SejongTelecom.co.ltd origin: AS55589 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20201223 source: RADB last-modified: 2023-11-13T16:03:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.250.109.0/24 descr: SejongTelecom.co.ltd origin: AS55589 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20201223 source: RADB last-modified: 2023-11-13T16:03:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.250.111.0/24 descr: SejongTelecom.co.ltd origin: AS55589 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20201223 source: RADB last-modified: 2023-11-13T16:03:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.219.59.0/24 descr: KITECH origin: AS55589 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20101125 source: RADB last-modified: 2023-11-13T16:15:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source