These entries are queried from radb.net using whois, you can try my project getting these.
:AS29926 route: 168.9.34.0/24 descr: Proxy Entry for Carroll County Board of Education origin: AS29926 mnt-by: MAINT-CHTR-WD changed: alec.ritter [at] charter.com 20180219 #18:39:14Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source