These entries are queried from radb.net using whois, you can try my project getting these.
:AS30291 route: 12.167.145.0/24 origin: AS30291 mnt-by: MNT-DFMC-4 descr: 28464 Marlboro Ave EASTON MD 21601 United States tech-c: NOC11579-ARIN admin-c: NOC11579-ARIN source: ARIN created: 2020-07-01T15:05:12Z last-modified: 2020-07-01T15:05:12Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source