These entries are queried from radb.net using whois, you can try my project getting these.
:AS32353 route: 208.89.28.0/22 descr: Concept Capital origin: AS32353 mnt-by: MAINT-AS27506 changed: mpribeck [at] lightower.com 20150113 source: RADB last-modified: 2023-11-13T15:47:02Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source