These entries are queried from radb.net using whois, you can try my project getting these.
:AS62817 route: 47.45.40.0/24 descr: RR-RC-Barrett Hospital & Healthcare-Midwest origin: AS62817 notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20191021 #15:51:31Z source: RADB last-modified: 2023-11-13T16:15:19Z rpki-ov-state: valid