These entries are queried from radb.net using whois, you can try my project getting these.
:AS23975 route: 61.75.196.0/23 descr: Proxy-Registered Route Object by DACOM(AS3786) origin: AS23975 remarks: This route object is for a DACOM's customer route remarks: which is being exported under this origin AS. remarks: remarks: This route object was automatically created to prevent remarks: some DACOM peer from rejecting this route because remarks: they may create their filter based on Route Registry DB. notify: noc [at] bora.net mnt-by: MAINT-AS3786 changed: yuncheol [at] bora.net 20050721 source: RADB last-modified: 2023-11-13T16:09:27Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 203.255.224.0/21 descr: yonam institute of digital technology origin: AS23975 mnt-by: MAINT-AS4766 changed: chss93 [at] kornet.net 20040822 source: RADB last-modified: 2023-11-13T16:15:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 220.66.111.0/24 descr: Yonam Institute of Digital Technology origin: AS23975 mnt-by: MAINT-AS4766 changed: chss93 [at] kornet.net 20040819 source: RADB last-modified: 2023-11-13T16:15:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 220.66.112.0/22 descr: Yonam Institute of Digital Technology origin: AS23975 mnt-by: MAINT-AS4766 changed: chss93 [at] kornet.net 20040819 source: RADB last-modified: 2023-11-13T16:15:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source