These entries are queried from radb.net using whois, you can try my project getting these.
:AS33692 route: 141.140.64.0/18 origin: AS33692 descr: Macalester College notify: farmer [at] umn.edu notify: jvoigt1 [at] macalester.edu notify: burbergc [at] macalester.edu mnt-by: MAINT-AS217 changed: farmer [at] umn.edu 20210623 #19:12:34Z source: RADB last-modified: 2023-11-13T16:06:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 141.140.128.0/18 origin: AS33692 descr: Macalester College notify: farmer [at] umn.edu notify: jvoigt1 [at] macalester.edu notify: burbergc [at] macalester.edu mnt-by: MAINT-AS217 changed: farmer [at] umn.edu 20210623 #19:07:15Z source: RADB last-modified: 2023-11-13T16:06:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 141.140.192.0/18 origin: AS33692 descr: Macalester College notify: farmer [at] umn.edu notify: jvoigt1 [at] macalester.edu notify: burbergc [at] macalester.edu mnt-by: MAINT-AS217 changed: farmer [at] umn.edu 20210623 #19:14:53Z source: RADB last-modified: 2023-11-13T16:06:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:114:f000::/44 origin: AS33692 descr: Macalester College notify: farmer [at] umn.edu notify: jvoigt1 [at] macalester.edu notify: burbergc [at] macalester.edu mnt-by: MAINT-AS217 changed: farmer [at] umn.edu 20210623 #19:19:33Z source: RADB last-modified: 2023-11-13T16:06:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source