These entries are queried from radb.net using whois, you can try my project getting these.
:AS396406 route: 38.135.96.0/24 descr: RS-RC-Maryville University Master-Midwest origin: AS396406 notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20190703 #20:22:32Z source: RADB last-modified: 2023-11-13T16:15:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source