These entries are queried from radb.net using whois, you can try my project getting these.
:AS45399 route: 58.120.47.0/24 descr: Hanjin-Tel origin: AS45399 mnt-by: MAINT-AS4766 changed: ipnoc [at] kt.com 20150402 #04:09:00Z 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: 58.226.213.0/24 origin: AS45399 descr: AS45399 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190102 #04:36:55Z source: RADB last-modified: 2023-11-13T15:55:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 59.15.10.0/24 descr: Hanjin Information Systems & Telecommunication Co., Ltd origin: AS45399 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20170215 #17:00:31Z source: RADB last-modified: 2023-11-13T15:50:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 61.99.78.0/24 origin: AS45399 descr: AS45399 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190102 #04:36:55Z source: RADB last-modified: 2023-11-13T15:55:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 61.99.79.0/24 origin: AS45399 descr: AS45399 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190102 #04:36:55Z source: RADB last-modified: 2023-11-13T15:55:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 114.202.222.0/24 origin: AS45399 descr: AS45399 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190102 #04:36:55Z source: RADB last-modified: 2023-11-13T15:55:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 114.204.123.0/24 origin: AS45399 descr: hanjin mnt-by: MAINT-AS4766 changed: ipnoc [at] kt.com 20210630 #02:12:02Z 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: 121.190.208.0/24 descr: Hanjin IT origin: AS45399 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20100117 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: 121.190.209.0/24 descr: Hanjin IT origin: AS45399 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20100117 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: 123.111.157.0/24 origin: AS45399 descr: AS45399 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190102 #04:36:55Z source: RADB last-modified: 2023-11-13T15:55:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 168.126.81.0/24 descr: proxy for HANARO TELECOM route origin: AS45399 mnt-by: MAINT-HANARO changed: ce-support [at] us.ntt.net 20110822 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 168.126.83.0/24 descr: proxy for HANARO TELECOM route origin: AS45399 mnt-by: MAINT-HANARO changed: ce-support [at] us.ntt.net 20110822 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 175.197.199.0/24 descr: LGCNS-AS-KR origin: AS45399 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190404 #07:36:08Z source: RADB last-modified: 2023-11-13T15:55:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.251.152.0/24 descr: Hanjin IT origin: AS45399 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20100117 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: 203.251.154.0/24 descr: Hanjin Information Systems & Telecommunication Co., Ltd origin: AS45399 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20170215 #17:00:31Z source: RADB last-modified: 2023-11-13T15:50:50Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.105.3.0/24 descr: LGCNS-AS-KR origin: AS45399 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190404 #07:36:08Z source: RADB last-modified: 2023-11-13T15:55:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.105.5.0/24 origin: AS45399 descr: AS45399 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190103 source: RADB last-modified: 2023-11-13T15:57:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.105.6.0/24 origin: AS45399 descr: AS45399 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190103 source: RADB last-modified: 2023-11-13T15:57:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.105.7.0/24 origin: AS45399 descr: AS45399 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190103 source: RADB last-modified: 2023-11-13T15:57:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.105.8.0/24 origin: AS45399 descr: AS45399 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190103 source: RADB last-modified: 2023-11-13T15:57:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.105.11.0/24 descr: LGCNS-AS-KR origin: AS45399 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190404 #07:36:08Z source: RADB last-modified: 2023-11-13T15:55:46Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.113.150.0/24 descr: HanJin-Tel origin: AS45399 mnt-by: MAINT-AS4766 changed: ipnoc [at] kt.com 20150402 #04:07:14Z 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: 210.180.126.0/24 origin: AS45399 descr: AS45399 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190102 #04:36:55Z source: RADB last-modified: 2023-11-13T15:55:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 211.206.114.0/24 descr: HIST origin: AS45399 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20110724 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: 211.210.89.0/24 descr: Hanjin IT origin: AS45399 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20100117 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: 211.210.94.0/24 descr: HIST origin: AS45399 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20110724 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: 211.218.15.0/24 origin: AS45399 descr: AS 45399 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20190410 #00:26:12Z source: RADB last-modified: 2023-11-13T15:55:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 218.236.173.0/24 descr: Hanjin-Tel origin: AS45399 mnt-by: MAINT-AS4766 changed: ipnoc [at] kt.com 20150402 #04:08:04Z 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: 219.251.140.0/24 descr: Hanjin IT origin: AS45399 mnt-by: MAINT-AS4766 changed: nw [at] kornet.net 20100117 source: RADB last-modified: 2023-11-13T16:15:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source