These entries are queried from radb.net using whois, you can try my project getting these.
:AS398088 route: 23.163.176.0/24 origin: AS398088 descr: Proxy Route Object for VanwaTech mnt-by: MAINT-AS53340 changed: rob [at] fiberhub.com 20201213 #16:16:19Z 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: 203.28.246.0/24 origin: AS398088 descr: VanwaTech mnt-by: MAINT-AS40676 changed: n.abdul [at] psychz.net 20220717 #17:46:25Z source: RADB last-modified: 2023-11-13T16:11:47Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source