These entries are queried from radb.net using whois, you can try my project getting these.
:AS395861 route: 52.144.120.0/22 origin: AS395861 descr: Medical Imaging Associates of Idaho Falls mnt-by: MAINT-AS21947 changed: networkengineers [at] blackfoot.com 20200702 #15:02:07Z source: RADB last-modified: 2023-11-13T16:01:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 52.144.120.0/24 descr: Proxy object for Medical Imaging Associates origin: AS395861 mnt-by: MAINT-AS15305 changed: bgpadmin [at] syringanetworks.net 20170523 #22:14:39Z source: RADB last-modified: 2023-11-13T15:51:12Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source