These entries are queried from radb.net using whois, you can try my project getting these.
:AS393781 route: 50.232.241.0/24 origin: AS393781 descr: Helm Group - Aero mnt-by: MAINT-AS54240 changed: engineering [at] syndeonetwork.com 20210422 #15:01:08Z source: RADB last-modified: 2023-11-13T16:05:30Z rpki-ov-state: valid