These entries are queried from radb.net using whois, you can try my project getting these.
:AS23713 route: 202.41.145.0/24 descr: Internet Systems Consortium, Inc. descr: Seoul, Republic of Korea origin: AS23713 mnt-by: MAINT-ISC last-modified: 2008-09-04T07:54:28Z source: APNIC country: KR rpki-ov-state: valid route: 202.41.145.0/24 changed: ekb [at] isc.org 20200306 descr: Internet Systems Consortium, Inc. / Seoul, Republic of Korea mnt-by: MAINT-AS1280 origin: AS23713 source: RADB last-modified: 2023-11-13T16:00:09Z rpki-ov-state: valid