These entries are queried from radb.net using whois, you can try my project getting these.
:AS399770 route: 137.83.74.0/23 origin: AS399770 descr: Peer with Rev.IO admin-c: WABIK-ARIN tech-c: BBELLI86-ARIN notify: bob.bellinger [at] dcblox.com mnt-by: MAINT-AS395567 changed: bob.bellinger [at] dcblox.com 20210713 #19:44:21Z source: RADB last-modified: 2023-11-13T16:07:52Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source