These entries are queried from radb.net using whois, you can try my project getting these.
:AS26991 route: 8.28.63.0/24 descr: Pershing Square Capital origin: AS26991 mnt-by: MAINT-AS27506 changed: yikehara [at] lightower.com 20190314 source: RADB last-modified: 2023-11-13T15:55:44Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source