These entries are queried from radb.net using whois, you can try my project getting these.
:AS25879 route: 198.135.70.0/24 origin: AS25879 descr: UPHS Marquette mnt-by: MAINT-AS25879 changed: nse [at] mghs.org 20220401 #19:22:27Z source: RADB last-modified: 2023-11-13T16:10:49Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source