These entries are queried from radb.net using whois, you can try my project getting these.
:AS32503 route: 136.228.188.0/22 origin: AS32503 descr: BGP Advertisement for CUProdigy at SLC1 mnt-by: MAINT-AS13767 changed: networking [at] databank.com 20190220 #19:47:27Z source: RADB last-modified: 2023-11-13T15:55:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source