These entries are queried from radb.net using whois, you can try my project getting these.
:AS62561 route: 50.59.20.0/24 descr: IEHP origin: AS62561 mnt-by: MAINT-CHTR-WD changed: jaskaran.sandhu [at] charter.com 20180313 #20:31:53Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source