These entries are queried from radb.net using whois, you can try my project getting these.
:AS397981 route: 139.64.250.0/24 origin: AS397981 descr: Firstech Inc mnt-by: MAINT-AS17378 changed: romeo.czumbil [at] tierpoint.com 20230121 #01:21:36Z source: RADB last-modified: 2023-11-13T16:17:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source