These entries are queried from radb.net using whois, you can try my project getting these.
:AS25928 route: 192.68.255.0/24 origin: AS25928 descr: Wisper-Server mnt-by: MAINT-AS22926 changed: mperry [at] wisperisp.com 20240327 # 1711Z source: RADB last-modified: 2024-03-27T17:11:54Z rpki-ov-state: valid