These entries are queried from radb.net using whois, you can try my project getting these.
:AS399225 route: 199.74.187.0/24 origin: AS399225 descr: radb maint mnt-by: MAINT-AS15695 changed: azman.zaini [at] expereo.com 20230109 #04:12:40Z source: RADB last-modified: 2023-11-13T16:13:29Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source