These entries are queried from radb.net using whois, you can try my project getting these.
:AS262819 route6: 2804:2a50::/32 descr: LINKMAIS PROVEDOR DE ACESSO AS REDES DE COM. LTDA origin: AS262819 notify: noc [at] lkmais.com.br mnt-by: MAINT-AS262819 changed: noc [at] lkmais.com.br 20200311 source: BBOI rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:2a50::/32 descr: ITX-LINKMAIS origin: AS262819 mnt-by: MAINT-AS18678 changed: adminred [at] internexa.com 20161017 #16:42:24Z source: RADB last-modified: 2023-11-13T15:49:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2804:2a50::/36 descr: LINKMAIS PROVEDOR DE ACESSO AS REDES DE COM. LTDA origin: AS262819 notify: noc [at] lkmais.com.br mnt-by: MAINT-AS262819 changed: noc [at] lkmais.com.br 20200311 source: BBOI rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source