These entries are queried from radb.net using whois, you can try my project getting these.
:AS54507 route: 199.168.48.0/21 origin: AS54507 descr: Access Broadband 106 5th Ave S Virginia MN 55792 United States admin-c: SENAR-ARIN tech-c: SENAR-ARIN mnt-by: MNT-AEC-115 created: 2021-07-01T20:47:54Z last-modified: 2021-07-01T20:47:54Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source