These entries are queried from radb.net using whois, you can try my project getting these.
:AS38113 route: 163.152.144.0/21 origin: AS38113 descr: Korea University mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20201226 #12:10:46Z 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: 163.152.144.0/24 origin: AS38113 descr: Korea University mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20201226 #12:10:46Z 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: 163.152.145.0/24 origin: AS38113 descr: Korea University mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20201226 #12:10:46Z 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: 163.152.146.0/24 origin: AS38113 descr: Korea University mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20201226 #12:10:46Z 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: 163.152.147.0/24 origin: AS38113 descr: Korea University mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20201226 #12:10:46Z 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: 163.152.148.0/24 origin: AS38113 descr: Korea University mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20201226 #12:10:46Z 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: 163.152.149.0/24 origin: AS38113 descr: Korea University mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20201226 #12:10:46Z 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: 163.152.150.0/24 origin: AS38113 descr: Korea University mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20201226 #12:10:46Z 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: 163.152.151.0/24 origin: AS38113 descr: Korea University mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20201226 #12:10:46Z 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: 210.207.187.0/24 origin: AS38113 descr: Korea University mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20201226 #12:10:46Z 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: 220.116.28.0/24 origin: AS38113 descr: Korea University mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20201226 #12:10:46Z 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: 220.116.29.0/24 origin: AS38113 descr: Korea University mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20201226 #12:10:46Z 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: 220.116.30.0/24 origin: AS38113 descr: Korea University mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20201226 #12:10:46Z 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: 220.116.31.0/24 origin: AS38113 descr: Korea University mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20201226 #12:10:46Z 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: 220.116.32.0/24 origin: AS38113 descr: Korea University mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20201226 #12:10:46Z 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: 220.149.136.0/24 origin: AS38113 descr: AS38113 Korea_University_GuroKREN mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20210114 #08:47:22Z source: RADB last-modified: 2023-11-13T16:03:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 220.149.137.0/24 origin: AS38113 descr: AS38113 Korea_University_GuroKREN mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20210114 #08:46:51Z source: RADB last-modified: 2023-11-13T16:03:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 220.149.138.0/24 origin: AS38113 descr: KUMC-AS-KR mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20220424 source: RADB last-modified: 2023-11-13T16:10:52Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 220.149.139.0/24 origin: AS38113 descr: KUMC-AS-KR mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20220424 source: RADB last-modified: 2023-11-13T16:10:52Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source