These entries are queried from radb.net using whois, you can try my project getting these.
:AS400216 route: 47.45.53.0/24 descr: CHTR-Parkway School District-Central origin: AS400216 admin-c: IPADD1-ARIN tech-c: IPADD1-ARIN notify: PublicIPAdressing [at] charter.com mnt-by: MAINT-CHTR-WD changed: PublicIPAdressing [at] charter.com 20220104 source: RADB last-modified: 2023-11-13T16:11:27Z rpki-ov-state: valid