These entries are queried from radb.net using whois, you can try my project getting these.
:AS55620 route: 211.184.74.0/24 descr: Korea National Oil Coporation origin: AS55620 mnt-by: MAINT-AS4766 changed: lasas001 [at] kornet.net 20120103 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: 211.184.75.0/24 descr: Korea National Oil Coporation origin: AS55620 mnt-by: MAINT-AS4766 changed: lasas001 [at] kornet.net 20120103 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: 220.92.83.0/24 origin: AS55620 descr: Korea National Oil Coporation mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20211229 source: RADB last-modified: 2023-11-13T16:09:05Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 220.92.84.0/24 origin: AS55620 descr: Korea National Oil Coporation mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20211229 source: RADB last-modified: 2023-11-13T16:09:05Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 220.92.175.0/24 origin: AS55620 descr: AS55620 mnt-by: MAINT-AS9318 changed: ipnoc [at] skbroadband.com 20220107 #12:00:54Z source: RADB last-modified: 2023-11-13T16:09:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source