These entries are queried from radb.net using whois, you can try my project getting these.
:AS54879 route: 68.66.151.0/24 descr: Proxy Registered Route origin: AS54879 remarks: Cowlitz PUD mnt-by: MAINT-AS16713 changed: wbiggs [at] noanet.net 20161129 #03:33:26Z source: RADB last-modified: 2023-11-13T15:50:10Z rpki-ov-state: valid