These entries are queried from radb.net using whois, you can try my project getting these.
:AS40387 route: 72.36.120.0/21 descr: University of Illinois at Urbana-Champaign 1304 W. Springfield Avenue Urbana, IL 61801 origin: AS40387 mnt-by: MAINT-AS38 changed: net-trouble [at] illinois.edu 20161118 #19:29:46Z source: RADB last-modified: 2023-11-13T15:49:57Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:0:e10::/48 descr: ICCN IPv6 Allocation origin: AS40387 mnt-by: MAINT-AS38 changed: net-trouble [at] uiuc.edu 20121017 #20:14:12Z source: RADB last-modified: 2023-11-13T15:43:27Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source