These entries are queried from radb.net using whois, you can try my project getting these.
:AS47064 route: 72.21.96.0/19 descr: Region15 origin: AS47064 mnt-by: MAINT-AS19108 changed: verlo.levels [at] suddenlink.com 20160620 #20:35:04Z source: RADB last-modified: 2023-11-13T15:49:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source