These entries are queried from radb.net using whois, you can try my project getting these.
:AS53582 route: 199.15.176.0/22 descr: SOLFO-LAX-1 member-of: RS-SOLFO-LAX origin: AS53582 notify: hostmaster [at] solfo.com mnt-by: MNT-SOLFO changed: ask [at] solfo.com 20100803 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source