These entries are queried from radb.net using whois, you can try my project getting these.
:AS4666 route: 144.48.100.0/24 descr: SejongTelecom.co.ltd origin: AS4666 mnt-by: MAINT-AS4670 changed: network [at] sejongtelecom.net 20180111 #06:30:03Z source: RADB last-modified: 2023-11-13T15:52:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 211.43.176.0/22 descr: Customer prefix origin: AS4666 mnt-by: MAINT-AS9318 changed: empires [at] sk.com 20140526 #23:33:58Z source: RADB last-modified: 2023-11-13T15:46:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source