These entries are queried from radb.net using whois, you can try my project getting these.
:AS53145 route6: 2804:850::/32 descr: Solicitado por IPv6 Internet. Feb 23 2015 origin: AS53145 mnt-by: MAINT-AS18678 changed: adminred [at] internexa.com 20150223 #15:57:21Z source: RADB last-modified: 2023-11-13T15:47:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:850::/33 descr: CLARO S.A. Customer origin: AS53145 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20180814 source: RADB last-modified: 2023-11-13T15:54:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:850::/34 descr: CLARO S.A. Customer origin: AS53145 remarks: Proxy Object notify: irradmin [at] embratel.net.br mnt-by: MAINT-AS4230 changed: irradmin [at] embratel.net.br 20180830 source: RADB last-modified: 2023-11-13T15:54:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source