These entries are queried from radb.net using whois, you can try my project getting these.
:AS38 route: 72.36.64.0/18 origin: AS38 descr: University of Illinois at Urbana-Champaign 1304 W. Springfield Avenue Urbana, IL 61801 admin-c: PWI34 tech-c: PWI34 mnt-by: MAINT-AS38 changed: iccn-ops-l [at] listserv.illinois.edu 20230207 #13:39:25Z source: RADB last-modified: 2023-11-13T16:14:55Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 72.36.64.160/27 origin: AS38 descr: UIUC Research Network mnt-by: MAINT-AS38 changed: iccn-ops-l [at] listserv.illinois.edu 20230223 #16:24:56Z source: RADB last-modified: 2023-11-13T16:15:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 72.36.80.0/23 origin: AS38 descr: UIUC Research Network mnt-by: MAINT-AS38 changed: iccn-ops-l [at] listserv.illinois.edu 20220616 #15:17:30Z source: RADB last-modified: 2023-11-13T16:11:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 72.36.81.64/26 origin: AS38 descr: UIUC Research Network mnt-by: MAINT-AS38 changed: iccn-ops-l [at] listserv.illinois.edu 20230223 #16:27:00Z source: RADB last-modified: 2023-11-13T16:15:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 72.36.84.0/22 origin: AS38 descr: UIUC Research Network mnt-by: MAINT-AS38 changed: iccn-ops-l [at] listserv.illinois.edu 20220616 #15:18:02Z source: RADB last-modified: 2023-11-13T16:11:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 72.36.88.0/24 origin: AS38 descr: UIUC Research Network mnt-by: MAINT-AS38 changed: iccn-ops-l [at] listserv.illinois.edu 20220616 #15:18:28Z source: RADB last-modified: 2023-11-13T16:11:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 72.36.91.0/27 origin: AS38 descr: UIUC Research Network mnt-by: MAINT-AS38 changed: iccn-ops-l [at] listserv.illinois.edu 20230223 #16:29:57Z source: RADB last-modified: 2023-11-13T16:15:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 72.36.96.0/20 origin: AS38 descr: UIUC Research Network mnt-by: MAINT-AS38 changed: iccn-ops-l [at] listserv.illinois.edu 20220616 #15:18:59Z source: RADB last-modified: 2023-11-13T16:11:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 72.36.96.0/24 origin: AS38 descr: UIUC Research Network mnt-by: MAINT-AS38 changed: iccn-ops-l [at] listserv.illinois.edu 20220616 #15:19:18Z source: RADB last-modified: 2023-11-13T16:11:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 72.36.97.0/26 origin: AS38 descr: UIUC Research Network mnt-by: MAINT-AS38 changed: iccn-ops-l [at] listserv.illinois.edu 20220616 #15:19:49Z source: RADB last-modified: 2023-11-13T16:11:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 72.36.100.0/22 origin: AS38 descr: UIUC Research Network mnt-by: MAINT-AS38 changed: iccn-ops-l [at] listserv.illinois.edu 20220616 #15:20:12Z source: RADB last-modified: 2023-11-13T16:11:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 72.36.104.0/21 origin: AS38 descr: UIUC Research Network mnt-by: MAINT-AS38 changed: iccn-ops-l [at] listserv.illinois.edu 20220616 #15:20:37Z source: RADB last-modified: 2023-11-13T16:11:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 128.174.0.0/16 descr: University of Illinois at Urbana-Champaign 1304 West Springfield Avenue Urbana, IL 61801-2987 origin: AS38 mnt-by: MAINT-AS38 changed: kline [at] uiuc.edu 19970715 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 130.126.0.0/16 descr: University of Illinois at Urbana-Champaign 1304 West Springfield Avenue Urbana, IL 61801-2987 origin: AS38 mnt-by: MAINT-AS38 changed: kline [at] uiuc.edu 19970715 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.17.0.0/16 descr: University of Illinois at Urbana-Champaign 1304 West Springfield Avenue Urbana, IL 61801-2987 origin: AS38 mnt-by: MAINT-AS38 changed: kline [at] uiuc.edu 19970715 source: RADB last-modified: 2023-11-13T15:39:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:0:e00::/48 descr: UIUC Campus IPv6 Allocation origin: AS38 mnt-by: MAINT-AS38 changed: net-trouble [at] uiuc.edu 20121017 #20:11:26Z source: RADB last-modified: 2023-11-13T15:43:27Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:0:e01::/48 origin: AS38 descr: UIUC Research IPv6 Allocation mnt-by: MAINT-AS38 changed: iccn-ops-l [at] listserv.illinois.edu 20190212 #21:58:23Z source: RADB last-modified: 2023-11-13T15:55:40Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source