These entries are queried from radb.net using whois, you can try my project getting these.
:AS397285 route: 38.44.248.0/21 origin: AS397285 descr: Route Registered for Cogent Communications Customer Cambridge Telephone Co geoidx: US mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20220506 #16:47:54Z source: RADB last-modified: 2023-11-13T16:10:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source