These entries are queried from radb.net using whois, you can try my project getting these.
:AS273611 route6: 2804:898c::/32 descr: CLARO S.A. Customer origin: AS273611 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20230210 source: RADB last-modified: 2023-11-13T16:14:56Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source