These entries are queried from radb.net using whois, you can try my project getting these.
:AS400140 route: 23.247.187.0/24 origin: AS400140 descr: NTT Data mnt-by: MAINT-AS15164 changed: jeremy.finn [at] upnfiber.com 20240114 # 1327Z source: RADB last-modified: 2024-01-14T13:27:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source