These entries are queried from radb.net using whois, you can try my project getting these.
:AS15251 route: 12.49.56.0/24 descr: Origination from AS15251 origin: AS15251 mnt-by: MAINT-AS13760 changed: graham.wooden [at] uniti.com 20180425 #20:17:32Z source: RADB last-modified: 2023-11-13T15:53:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 63.166.183.0/24 descr: Originate from AS15251 origin: AS15251 mnt-by: MAINT-AS13760 changed: graham.wooden [at] uniti.com 20180425 #19:12:59Z source: RADB last-modified: 2023-11-13T15:53:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 65.166.22.0/24 descr: Origination from AS15251 origin: AS15251 mnt-by: MAINT-AS13760 changed: graham.wooden [at] uniti.com 20180425 #20:17:52Z source: RADB last-modified: 2023-11-13T15:53:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.216.88.0/24 descr: Originate from AS15251 origin: AS15251 mnt-by: MAINT-AS13760 changed: graham.wooden [at] uniti.com 20180425 #19:17:31Z source: RADB last-modified: 2023-11-13T15:53:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source