These entries are queried from radb.net using whois, you can try my project getting these.
:AS14339 route: 200.47.3.0/24 origin: AS14339 descr: BT ARG changed: noc [at] internexa.com 20181203 #22:18:02Z source: RADB mnt-by: MAINT-AS18678 last-modified: 2023-11-13T15:55:21Z rpki-ov-state: valid