These entries are queried from radb.net using whois, you can try my project getting these.
:AS1023 route: 174.136.193.0/24 origin: AS1023 descr: Proxy route object registered on behalf of our customer: Computer Team, INC mnt-by: MAINT-AS30600 changed: lee.fawkes [at] metronetinc.com 20220720 #20:42:22Z source: RADB last-modified: 2023-11-13T16:11:47Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source