These entries are queried from radb.net using whois, you can try my project getting these.
:AS133873 route: 216.99.204.0/24 origin: AS133873 descr: Proxy route remarks: Proxy route mnt-by: MAINT-AS7545 changed: core-neteng-support [at] tpg.com.au 20230328 #01:29:43Z source: RADB last-modified: 2023-11-13T16:15:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source