These entries are queried from radb.net using whois, you can try my project getting these.
:AS54331 route: 72.15.20.0/24 descr: RR-RC-SoVerNet Inc-Northeast origin: AS54331 admin-c: IPADDREG tech-c: IPADDREG notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20200608 #06:00:03Z source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source