These entries are queried from radb.net using whois, you can try my project getting these.
:AS23490 route: 184.187.21.0/24 origin: AS23490 descr: SD remarks: Proxy object for AS23490 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220513 source: RADB last-modified: 2023-11-13T16:11:05Z rpki-ov-state: valid route: 184.189.152.0/24 origin: AS23490 descr: West Development, Inc mnt-by: MAINT-AS17378 changed: romeo.czumbil [at] tierpoint.com 20190805 #20:48:00Z source: RADB last-modified: 2023-11-13T16:17:09Z rpki-ov-state: valid