These entries are queried from radb.net using whois, you can try my project getting these.
:AS45422 route6: 2001:df0:f7::/48 descr: Salesforce.com origin: AS45422 notify: neteng [at] salesforce.com mnt-by: SALESFORCE-MNT changed: neteng [at] salesforce.com 20120430 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source