These entries are queried from radb.net using whois, you can try my project getting these.
:AS23171 route: 149.61.0.0/16 origin: AS23171 descr: Manhattan College mnt-by: MAINT-AS23171 changed: lsalazar01 [at] manhattan.edu 20231020 #14:54:35Z source: RADB last-modified: 2023-11-13T16:19:05Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 149.61.3.0/24 origin: AS23171 descr: Manhattan College mnt-by: MAINT-AS23171 changed: lsalazar01 [at] manhattan.edu 20240130 # 1529Z source: RADB last-modified: 2024-01-30T15:29:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 149.61.190.0/24 origin: AS23171 descr: Manhattan College Science DMZ mnt-by: MAINT-AS23171 changed: lsalazar01 [at] manhattan.edu 20240401 # 1631Z source: RADB last-modified: 2024-04-01T16:31:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.48.112.0/24 descr: Manhattan College origin: AS23171 mnt-by: MAINT-AS23171 changed: sfrye01 [at] manhattan.edu 20170905 #19:29:15Z source: RADB last-modified: 2023-11-13T15:51:31Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:fc8f::/36 origin: AS23171 descr: Manhattan College mnt-by: MAINT-AS23171 changed: noc [at] manhattan.edu 20230919 #17:56:43Z source: RADB last-modified: 2023-11-13T16:18:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:fc8f:190::/48 origin: AS23171 descr: Manhattan College Science DMZ v6 mnt-by: MAINT-AS23171 changed: lsalazar01 [at] manhattan.edu 20240401 # 1634Z source: RADB last-modified: 2024-04-01T16:34:15Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source