These entries are queried from radb.net using whois, you can try my project getting these.
:AS398841 route: 64.190.206.0/24 descr: CHTR-Averitt Express-South origin: AS398841 admin-c: IPADDREG tech-c: IPADDREG notify: publicipaddressing [at] charter.com mnt-by: MAINT-CHTR-WD changed: publicipaddressing [at] charter.com 20210310 #06:39:33Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: valid