These entries are queried from radb.net using whois, you can try my project getting these.
:AS393724 route: 199.67.16.0/20 descr: Proxy fbo Trident Technical College (AS393724) origin: AS393724 remarks: Windstream Footprint mnt-by: MAINT-AS7029 changed: David.Friant [at] windstream.com 20150126 source: RADB last-modified: 2023-11-13T15:47:05Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source