These entries are queried from radb.net using whois, you can try my project getting these.
:AS23588 route: 1.201.8.0/21 origin: AS23588 descr: Kakao_Enterprise mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20220801 #06:47:41Z source: RADB last-modified: 2023-11-13T16:11:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 1.201.8.0/23 descr: SejongTelecom.co.ltd origin: AS23588 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20200603 source: RADB last-modified: 2023-11-13T16:00:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 58.225.179.0/24 origin: AS23588 descr: Kakao_Enterprise mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20220801 #06:52:57Z source: RADB last-modified: 2023-11-13T16:11:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 61.109.213.0/24 origin: AS23588 descr: Kakao_Enterprise mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20220801 #06:48:37Z source: RADB last-modified: 2023-11-13T16:11:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 61.109.214.0/23 origin: AS23588 descr: Kakao_Enterprise mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20220801 #06:49:48Z source: RADB last-modified: 2023-11-13T16:11:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 61.109.216.0/21 origin: AS23588 descr: Kako_Enterprise mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20220801 #06:50:43Z source: RADB last-modified: 2023-11-13T16:11:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 61.109.224.0/20 origin: AS23588 descr: Kakao_Enterprise mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20220801 #06:51:31Z source: RADB last-modified: 2023-11-13T16:11:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 61.109.231.0/24 origin: AS23588 descr: Kakao_Enterprise mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20220907 #04:07:06Z source: RADB last-modified: 2023-11-13T16:12:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 61.109.240.0/23 origin: AS23588 descr: Kakao_Enterprise mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20220801 #06:52:18Z source: RADB last-modified: 2023-11-13T16:11:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.150.162.0/23 descr: SejongTelecom.co.ltd origin: AS23588 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20200422 source: RADB last-modified: 2023-11-13T16:00:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.150.162.0/24 descr: SejongTelecom.co.ltd origin: AS23588 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20200603 source: RADB last-modified: 2023-11-13T16:00:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.109.0.0/20 descr: SejongTelecom.co.ltd origin: AS23588 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20200603 source: RADB last-modified: 2023-11-13T16:00:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.109.40.0/21 descr: SejongTelecom.co.ltd origin: AS23588 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20200603 source: RADB last-modified: 2023-11-13T16:00:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.109.52.0/22 descr: SejongTelecom.co.ltd origin: AS23588 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20200603 source: RADB last-modified: 2023-11-13T16:00:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.109.56.0/21 origin: AS23588 descr: Kakao_enterprise mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20220801 #06:42:10Z source: RADB last-modified: 2023-11-13T16:11:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.109.56.0/22 descr: SejongTelecom.co.ltd origin: AS23588 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20200603 source: RADB last-modified: 2023-11-13T16:00:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.109.60.0/22 descr: SejongTelecom.co.ltd origin: AS23588 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20200603 source: RADB last-modified: 2023-11-13T16:00:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.109.76.0/22 descr: SejongTelecom.co.ltd origin: AS23588 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20200603 source: RADB last-modified: 2023-11-13T16:00:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.109.80.0/22 descr: SejongTelecom.co.ltd origin: AS23588 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20200603 source: RADB last-modified: 2023-11-13T16:00:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.109.140.0/22 descr: SejongTelecom.co.ltd origin: AS23588 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20200603 source: RADB last-modified: 2023-11-13T16:00:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.109.144.0/23 descr: SejongTelecom.co.ltd origin: AS23588 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20200603 source: RADB last-modified: 2023-11-13T16:00:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.109.144.0/24 descr: SejongTelecom.co.ltd origin: AS23588 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20200422 source: RADB last-modified: 2023-11-13T16:00:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.109.145.0/24 descr: SejongTelecom.co.ltd origin: AS23588 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20200422 source: RADB last-modified: 2023-11-13T16:00:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 211.176.251.0/24 origin: AS23588 descr: AS 23588 kakao enterprise mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20240125 # 2114Z source: RADB last-modified: 2024-01-25T21:14:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source