These entries are queried from radb.net using whois, you can try my project getting these.
:AS1704 route: 59.5.77.0/24 descr: SejongTelecom.co.ltd origin: AS1704 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: 137.68.0.0/16 descr: proxy for HANARO TELECOM route origin: AS1704 mnt-by: MAINT-HANARO changed: ce-support [at] us.ntt.net 20080504 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 137.68.64.0/18 descr: KAIST origin: AS1704 mnt-by: MAINT-AS4766 changed: ipnoc [at] kt.com 20171110 #07:33:41Z 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: 137.68.128.0/17 descr: KAIST origin: AS1704 mnt-by: MAINT-AS4766 changed: ipnoc [at] kt.com 20171110 #07:34:18Z 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: 210.107.145.0/24 origin: AS1704 descr: KAIST-SEOUL-AS-KR mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20230504 source: RADB last-modified: 2023-11-13T16:17:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 210.107.147.0/24 descr: SejongTelecom.co.ltd origin: AS1704 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