These entries are queried from radb.net using whois, you can try my project getting these.
:AS45971 route: 103.59.156.0/24 descr: AS45971 origin: AS45971 mnt-by: MAINT-AS9318 changed: noc [at] skbroadband.com 20151019 #05:51:24Z source: RADB last-modified: 2023-11-13T15:48:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.59.156.0/25 descr: SejongTelecom.co.ltd origin: AS45971 notify: network [at] sejongtelecom.net mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20171228 #04:45:47Z source: RADB last-modified: 2023-11-13T15:52:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.59.156.128/25 descr: SejongTelecom.co.ltd origin: AS45971 notify: network [at] sejongtelecom.net mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20171228 #04:45:47Z source: RADB last-modified: 2023-11-13T15:52:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.59.159.0/24 origin: AS45971 descr: SejongTelecom customer mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20221001 #08:17:57Z source: RADB last-modified: 2023-11-13T16:12:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source