These entries are queried from radb.net using whois, you can try my project getting these.
:AS397734 route: 192.43.254.0/24 origin: AS397734 descr: Radford.edu University. Radford connects to Roanoke Valley Broadband which in turn is a Pixel Factory customer mnt-by: MAINT-AS32425 changed: jlarsen [at] richweb.com 20190717 #20:22:29Z source: RADB last-modified: 2023-11-13T15:56:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source