These entries are queried from radb.net using whois, you can try my project getting these.
:AS396161 route: 148.78.76.0/24 origin: AS396161 descr: Des Moines Airport Authority mnt-by: MAINT-AS5056 changed: will.hughes [at] aureon.com 20200904 source: RADB last-modified: 2023-11-13T16:01:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source