These entries are queried from radb.net using whois, you can try my project getting these.
:AS399447 route: 198.59.135.0/24 origin: AS399447 descr: Enterprise Computing Services, LLC mnt-by: MAINT-AS5009 changed: ipadmin [at] eatel.net 20210401 #22:17:51Z source: RADB last-modified: 2023-11-13T16:05:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source