These entries are queried from radb.net using whois, you can try my project getting these.
:AS19464 route: 137.113.0.0/16 descr: Proxy-registered route object for Washington & Lee University origin: AS19464 mnt-by: MAINT-AS7795 changed: twatkins [at] ntelos.net 20090917 #18:36:38Z source: RADB last-modified: 2023-11-13T15:40:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source