These entries are queried from radb.net using whois, you can try my project getting these.
:AS399592 route: 137.220.0.0/24 origin: AS399592 descr: iGo Technology Inc. 1095 Plaza Drive Grundy VA 24614 United States admin-c: VANDY43-ARIN tech-c: OQUIN6-ARIN tech-c: VANDY43-ARIN mnt-by: MNT-IT-350 created: 2021-11-30T15:31:21Z last-modified: 2021-11-30T15:31:21Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source