These entries are queried from radb.net using whois, you can try my project getting these.
:AS10499 route: 157.225.0.0/16 descr: Advarde origin: AS10499 mnt-by: MAINT-AS27506 changed: rhinst [at] lightower.com 20160902 #18:57:08Z source: RADB last-modified: 2023-11-13T15:49:51Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source