These entries are queried from radb.net using whois, you can try my project getting these.
:AS398408 route: 24.248.24.0/24 origin: AS398408 descr: Proxy registered route object for Riverside Health System admin-c: Corey Fisher tech-c: Steven Brooks mnt-by: MAINT-AS7795 changed: kevin.houck [at] segra.com 20200715 #15:23:11Z source: RADB last-modified: 2023-11-13T16:01:13Z rpki-ov-state: valid